BrainStuff

What is dynamite? How does it work?

podcast@howstuffworks.com (BrainStuff) — Fri, 11 Dec 2009 10:03:38 -0500

Dynamite is a type of chemical explosive. Discover how explosives from gasoline to dynamite work in this episode of BrainStuff.

How do cats purr?

podcast@howstuffworks.com (BrainStuff) — Wed, 09 Dec 2009 10:30:29 -0500

Cats tend to purr when they're happy, but pleasure isn't the only reason for this behavior. And they aren't the only animals who purr. Find out why and how cats and other animals purr in this episode of BrainStuff.

What is a rice krispy?

podcast@howstuffworks.com (BrainStuff) — Mon, 07 Dec 2009 11:15:38 -0500

Like many cereals, rice krispies are made by puffing grains -- in this case, rice. Find out how rice crispies and other puffed cereals are manufactured in this episode of BrainStuff.

Why do batteries die but then come back to life?

podcast@howstuffworks.com (BrainStuff) — Fri, 04 Dec 2009 12:06:45 -0500

Batteries, particularly car batteries, seem to go dead and then come back to life after a resting period. How does this self-recharging feature of batteries work? Find out in this episode of BrainStuff.

How do artificial flavors work?

podcast@howstuffworks.com (BrainStuff) — Wed, 02 Dec 2009 11:25:59 -0500

Artificial flavors imitate natural flavors and are found in many processed products. Learn more about the chemistry of flavors, both natural and artificial, in this episode of BrainStuff.

Is there any way to see satellites that are in orbit?

podcast@howstuffworks.com (BrainStuff) — Mon, 30 Nov 2009 11:48:25 -0500

There are hundreds of satellites orbiting the Earth, but it's not always easy to see them. Get Marshall's tips on how to spot satellites in this episode of BrainStuff.

Why can't we breathe underwater?

podcast@howstuffworks.com (BrainStuff) — Fri, 27 Nov 2009 18:13:12 -0500

Water is made up of hydrogen and oxygen, so why aren't we able to breathe underwater? Find out in this episode of BrainStuff.

What is leather and where does it come from?

podcast@howstuffworks.com (BrainStuff) — Wed, 25 Nov 2009 11:19:50 -0500

Most leather is made from processed cattle skin, although synthetic and other varieties exist. Learn more about leather in this episode of BrainStuff.

How do satellites orbit the earth?

podcast@howstuffworks.com (BrainStuff) — Mon, 23 Nov 2009 10:38:01 -0500

In this episode of BrainStuff, Marshall explains the physics behind satellites and orbits.

How can you measure the height of a tall tower?

podcast@howstuffworks.com (BrainStuff) — Fri, 20 Nov 2009 11:08:28 -0500

In this episode of BrainStuff, Marshall reveals three common techniques for measuring the height of tall objects like towers.

How does the lighter in a barbeque grill work?

podcast@howstuffworks.com (BrainStuff) — Wed, 18 Nov 2009 12:05:50 -0500

A barbeque grill has a push-button lighter that relies on piezoelectricity to generate a spark. Learn more about how piezoelectricity works -- and the kinds of devices that use piezoelectric materials -- in this episode of BrainStuff.

How does a magneto work?

podcast@howstuffworks.com (BrainStuff) — Mon, 16 Nov 2009 14:11:27 -0500

A magneto is a kind of electrical generator used in small gasoline engines in lieu of a battery. Find out how magnetos work in this episode of BrainStuff.

Why do tools have "drop forged" stamped on them?

podcast@howstuffworks.com (BrainStuff) — Fri, 13 Nov 2009 11:09:40 -0500

Tools that say "drop forged" have been created using a technique called drop forging. Find out how drop forging and several other kinds of forging work, and why drop forging is a sign of a sturdy tool, in this episode of BrainStuff.

What is a T1 line and how does it work?

podcast@howstuffworks.com (BrainStuff) — Wed, 11 Nov 2009 12:29:15 -0500

A T1 line is a dedicated fiber optic or copper cable that provides businesses with far more digital data than a residential line. Discover how T1 and other kinds of fiber optic lines work in this episode of BrainStuff.

How does a jet engine's afterburner work?

podcast@howstuffworks.com (BrainStuff) — Mon, 09 Nov 2009 10:51:38 -0500

The afterburner on a jet engine adds thrust to the engine. Tune in as Marshall Brain explains how an afterburner works -- and the pros and cons of using one -- in this episode of BrainStuff.

How does the public option work?

podcast@howstuffworks.com (BrainStuff) — Fri, 06 Nov 2009 10:10:16 -0500

In the current U.S. debate over health care reform, a government-sponsored public option has been a controversial topic. Tune in to this episode of BrainStuff to hear Marshall Brain explain the nuances and implications of the public option.

Why do they add iodine to salt?

podcast@howstuffworks.com (BrainStuff) — Wed, 04 Nov 2009 10:57:06 -0500

Table salt contains iodine to help prevent thyroid problems and iodine deficiencies. Find out how table salt keeps your thyroid happy -- and what iodine has to do with a nuclear attack -- in this episode of BrainStuff.

How much sugar do they really put in soda?

podcast@howstuffworks.com (BrainStuff) — Mon, 02 Nov 2009 13:26:29 -0500

Sodas and soft drinks contain a surprising amount of sugar -- more than you might expect. Tune in as Marshall Brain reveals how much sugar is in soda in this episode of BrainStuff.

How do you add a USB device if you've run out of ports?

podcast@howstuffworks.com (BrainStuff) — Fri, 30 Oct 2009 10:55:47 -0400

Desktop computers and laptops only have so many USB ports, so what do you do when you want to plug in more USB devices and they're all full? You buy a USB hub. Find out how these hubs work, and which kind you should get, in this episode of BrainStuff.

How do they make fortune cookies?

podcast@howstuffworks.com (BrainStuff) — Wed, 28 Oct 2009 10:35:17 -0400

You've probably had countless fortune cookies after Chinese meals, but have you ever wondered how they're made? Discover the "food technology" behind those prescient little cookies in this episode of BrainStuff.

How do they measure sea level?

podcast@howstuffworks.com (BrainStuff) — Mon, 26 Oct 2009 10:14:14 -0400

Sea level is an important measurement, but it's also a complicated one. Find out why in this episode of BrainStuff.

Why does lettuce stored in a bag stay fresh longer?

podcast@howstuffworks.com (BrainStuff) — Fri, 23 Oct 2009 11:53:11 -0400

Many foods you'll find at the grocery store, like lettuce, for example, are stored in special plastic packaging called MAP that helps them stay fresh longer. Find out what MAP is -- and how it keeps food fresh longer -- in this episode of BrainStuff.

How do herbicides like Roundup work?

podcast@howstuffworks.com (BrainStuff) — Wed, 21 Oct 2009 11:07:06 -0400

Herbicides like Roundup are products that inhibit plant and weed growth in a very specific way. Explore the biochemistry behind glyphosphate-based herbicides in this episode of HowStuffWorks.com.

What's the most efficient way to mow your yard?

podcast@howstuffworks.com (BrainStuff) — Mon, 19 Oct 2009 10:00:31 -0400

There's more than one way to mow a yard, but which is the most efficient? Tune in to this episode of BrainStuff to find out.

Does airing out mattresses outside do any good?

podcast@howstuffworks.com (BrainStuff) — Fri, 16 Oct 2009 10:26:41 -0400

Airing out rugs and mattresses outdoors is a great way to disinfect them, thanks to a little thing called ultraviolet light. Find out how UV light can disinfect everything from rugs to water in this episode of BrainStuff.

What is the problem with MTBE in gasoline?

podcast@howstuffworks.com (BrainStuff) — Wed, 14 Oct 2009 09:59:14 -0400

Some gasoline contains MTBE, or methyl tertiary butyl ether. Find out why MTBE is added to gasoline in the first place, and why it's no longer a popular additive, in this episode of BrainStuff.

How does an EPIRB distress radio work?

podcast@howstuffworks.com (BrainStuff) — Mon, 12 Oct 2009 10:18:35 -0400

An EPIRB, or Emergency Position Indicating Radio Beacon, helps rescuers find people -- mostly boaters -- in emergency situations. Tune in to find out how EPIRB radios work in this podcast from HowStuffWorks.com.

Is chocolate poisonous to dogs?

podcast@howstuffworks.com (BrainStuff) — Fri, 09 Oct 2009 10:50:22 -0400

Under the right conditions, chocolate can indeed be deadly for dogs. Tune in to learn more about the compound in chocolate that makes it dangerous for dogs -- and how much is too much -- in this podcast from HowStuffWorks.com.

How can there be seedless grapes?

podcast@howstuffworks.com (BrainStuff) — Wed, 07 Oct 2009 11:17:44 -0400

Seedless grapes are the most common kind on the market, but have you ever wondered how a grape can be seedless? How does it grow? Discover how seedless grapes accidentally came about -- and how they grow -- in this podcast from HowStuffWorks.com.

How do dry chemical fire extinguishers work?

podcast@howstuffworks.com (BrainStuff) — Mon, 05 Oct 2009 11:26:09 -0400

Three elements create a fire. Discover what they are and how dry chemical fire extinguishers combat them in this podcast from HowStuffWorks.com.

What does Pez mean?

podcast@howstuffworks.com (BrainStuff) — Fri, 02 Oct 2009 10:27:11 -0400

Today, Pez candy dispensers are a sweet treat for children and a novelty for adults. Originally, however, they were created to help adults quit smoking. Learn more about the fascinating history of Pez in this podcast from HowStuffWorks.com.

What does tear gas do?

podcast@howstuffworks.com (BrainStuff) — Wed, 30 Sep 2009 11:26:17 -0400

You've probably heard of tear gas before, but did you know that Mace is a form of it? Learn more about the three commonly used types of tear gas -- how they work and what they're used for -- in this podcast from HowStuffWorks.com.

What are carbide tips?

podcast@howstuffworks.com (BrainStuff) — Mon, 28 Sep 2009 11:47:08 -0400

Many cutting tools are made of materials like steel but have carbide tips, which stay sharper longer. Learn more about carbide tips in this podcast from HowStuffWorks.com.

How do I burn calories on a stair machine?

podcast@howstuffworks.com (BrainStuff) — Fri, 25 Sep 2009 10:19:15 -0400

If you've ever sweated your way through a work-out on a stair machine, you know that calories are definitely being burned in the process. But how? Learn more about foot-pounds, horsepower and stair machines in this podcast from HowStuffWorks.com.

Why is a circular saw louder than a table saw?

podcast@howstuffworks.com (BrainStuff) — Wed, 23 Sep 2009 10:32:58 -0400

Circular saws are much noisier than table saws partly because of the type of motor they possess. Learn more about universal and induction motors in BrainStuff, a podcast from HowStuffWorks.com.

Why do some engines use a dry sump oil system?

podcast@howstuffworks.com (BrainStuff) — Mon, 21 Sep 2009 10:18:22 -0400

Most car engines use a wet sump oil system, but some rely on a dry sump system. Find out how a dry sump system works -- and why it's advantageous -- in this podcast from HowStuffWorks.com.

What is low-power FM (LPFM)?

podcast@howstuffworks.com (BrainStuff) — Fri, 18 Sep 2009 10:37:41 -0400

FM radio stations have high operating costs, so they're seldom affordable to individuals and small organizations that want to use them for not-for-profit purposes. Find out how LPFM stations work in this podcast from HowStuffWorks.com.

How much does 20-pound bond paper weigh?

podcast@howstuffworks.com (BrainStuff) — Wed, 16 Sep 2009 10:33:10 -0400

Your average ream of printer paper is called 20-pound bond paper, but it doesn't actually weigh 20 pounds. Tune in as Marshall explains this strange American paper naming system -- and its metric alternative -- in this podcast from HowStuffWorks.com.

Should you turn your computer off when it's not in use?

podcast@howstuffworks.com (BrainStuff) — Mon, 14 Sep 2009 13:34:49 -0400

When it comes to the question of whether or not you should turn off your computer when you're not using it, there's no simple answer. Tune in to get Marshall's thorough take on the topic in this podcast from HowStuffWorks.com.

What do those diamond-shaped signs on buildings mean?

podcast@howstuffworks.com (BrainStuff) — Fri, 11 Sep 2009 12:34:55 -0400

The National Fire Protection Agency, or NFPA, uses these signs to indicate hazardous materials stored in an unknown building. Listen in to learn how the signs work -- and how they help firefighters -- in this podcast from HowStuffWorks.com.

What is an Omega-3 fatty acid?

podcast@howstuffworks.com (BrainStuff) — Wed, 09 Sep 2009 13:49:21 -0400

Omega-3 fatty acids are essential to the human body. Tune in to hear Marshall Brain explain the chemistry of fat molecules and fatty acids, Omega-3s in particular, in this podcast from HowStuffWorks.com.

What gives a Harley its distinctive sound?

podcast@howstuffworks.com (BrainStuff) — Mon, 07 Sep 2009 15:51:23 -0400

A Harley Davidson motorcycle emits a very distintive sound because of the unique way its engine works. Find out more in this podcast from HowStuffWorks.com.

What is the battery light on your car's dashboard for?

podcast@howstuffworks.com (BrainStuff) — Fri, 04 Sep 2009 10:41:39 -0400

Cars rely on batteries to keep their electrical parts running and alternators to keep their batteries alive. Battery lights come into play when there's a charging problem. Find out more about battery lights in this podcast from HowStuffWorks.com.

How does the Radio Data System work?

podcast@howstuffworks.com (BrainStuff) — Wed, 02 Sep 2009 11:16:55 -0400

The Radio Data System, or RDS, allows your radio to display information like song titles and radio station call signs. Find out how the RDS works in this podcast from HowStuffWorks.com.

How do trick birthday candles work?

podcast@howstuffworks.com (BrainStuff) — Mon, 31 Aug 2009 10:58:35 -0400

Candles are simple yet ingenious light-producing devices, and it only takes one extra ingredient to turn them into trick candles. Find out how regular and trick candles work in this podcast from HowStuffWorks.com.

What exactly is a blueprint?

podcast@howstuffworks.com (BrainStuff) — Fri, 28 Aug 2009 10:24:08 -0400

Blueprinting, which has been around since 1842, is a common way to reproduce an architectural drawing. Tune in to learn more about the complex chemical processes that make blueprints blue -- and white -- in this podcast from HowStuffWorks.com.

Why does your computer need a battery?

podcast@howstuffworks.com (BrainStuff) — Wed, 26 Aug 2009 12:13:54 -0400

Computers have a small battery that's important because it keeps the machine's clock running -- and sometimes, your computer. Get the goods on computer batteries in this podcast from HowStuffWorks.com.

What is carrageenan?

podcast@howstuffworks.com (BrainStuff) — Mon, 24 Aug 2009 11:32:27 -0400

Carrageenan is a gum derived from seaweed that helps processed food withstand the rigors of transportation and long waits in warehouses. Learn more about the role that carrageenan plays in food by checking out this podcast from HowStuffWorks.com.

How does an airplane toilet work?

podcast@howstuffworks.com (BrainStuff) — Fri, 21 Aug 2009 10:55:17 -0400

Airplane toilets serve the same function as regular ones, but because they exist in a moving environment, they rely on slightly different technology to get the job done. Find out how they work in this podcast from HowStuffWorks.com.

Why do they include jokers in a deck of playing cards?

podcast@howstuffworks.com (BrainStuff) — Wed, 19 Aug 2009 10:15:23 -0400

The joker is an obscure and seemingly useless addition to a deck of modern playing card, but originally, it was a powerful card. Discover the history of the joker card -- and how the modern deck took shape -- in this podcast from HowStuffWorks.com.

Why doesn't the space shuttle burn up upon re-entry?

podcast@howstuffworks.com (BrainStuff) — Mon, 17 Aug 2009 13:09:07 -0400

Meteors burn up once they hit Earth's atmosphere, and the space shuttle would do the same if it wasn't protected. Learn more about meteors and the technologies that keep the space shuttle from burning up in this podcast from HowStuffWorks.com.

What causes high tide and low tide?

podcast@howstuffworks.com (BrainStuff) — Fri, 14 Aug 2009 09:19:00 -0400

The moon's gravitational pull is strong enough to affect the oceans on Earth, resulting in low and high tides. Discover exactly how high and low tides work in this podcast from HowStuffWorks.com.

How does the common cold work?

podcast@howstuffworks.com (BrainStuff) — Wed, 12 Aug 2009 10:10:43 -0400

We've all had a cold at one point or another; it entails an uncomfortable cocktail of symptoms like sneezing, coughing and a runny nose. But why do we get colds? How do they work? Find out in this podcast from HowStuffWorks.com.

What are other ways to store energy besides batteries?

podcast@howstuffworks.com (BrainStuff) — Mon, 10 Aug 2009 10:29:02 -0400

Batteries are a common way to store energy, but there are many others. Discover more energy storage techniques, from falling weights to fuel cells, in this podcast from HowStuffWorks.com.

Why is the Nissan Leaf such a big deal?

podcast@howstuffworks.com (BrainStuff) — Fri, 07 Aug 2009 15:26:27 -0400

Nissan recently released the Leaf, a model which may be the first viable electric car to come on the market. How does it work? Why do people have high hopes for it? Tune in to this podcast from HowStuffWorks.com to find out more about the Nissan Leaf.

How does a traffic light detect cars?

podcast@howstuffworks.com (BrainStuff) — Wed, 05 Aug 2009 10:09:51 -0400

Traffic lights detect vehicles using a variety of methods. Check out this podcast from HowStuffWorks.com to find out how timers, inductive loops and other detectors keep traffic running smoothly.

Why do freezing temperatures yield both snow and rain?

podcast@howstuffworks.com (BrainStuff) — Mon, 03 Aug 2009 15:18:03 -0400

When the temperature dips below freezing, precipitation often turns into snow, but sometimes you'll get freezing rain or sleet. Why? Find out in this podcast from HowStuffWorks.com.

How long before sharks start going extinct?

podcast@howstuffworks.com (BrainStuff) — Fri, 31 Jul 2009 10:30:25 -0400

Sharks are ancient, fierce creatures, but they're also in danger of extinction on many fronts. Discover all the factors that make sharks vulnerable -- and what you can do to help -- in this podcast from HowStuffWorks.com.

How can some eggs be better for you than others?

podcast@howstuffworks.com (BrainStuff) — Thu, 30 Jul 2009 15:11:19 -0400

If you've been to the grocery store recently, you know that eggs come in many varieties, some claiming to be better for you than others. What differentiates a normal egg from a "special" one? Find out in this podcast from HowStuffWorks.com.

How does catnip work?

podcast@howstuffworks.com (BrainStuff) — Mon, 27 Jul 2009 12:40:50 -0400

You've probably heard that catnip drives felines wild, but did you know that it's a plant related to mint? And that it doesn't affect all cats? Find out how catnip works in this podcast from HowStuffWorks.com.

How much does planet Earth weigh?

podcast@howstuffworks.com (BrainStuff) — Fri, 24 Jul 2009 10:18:41 -0400

As far as weight goes, Earth is a pretty hefty celestial body. But exactly how heavy? And how does one measure something so massive? Find out in this podcast from HowStuffWorks.com.

What's the deal with milk?

podcast@howstuffworks.com (BrainStuff) — Wed, 22 Jul 2009 12:49:58 -0400

Milk is often touted as a "miracle drink," full of restorative, nutritional properties. And there's some truth to this claim. Find out why mammal milk is called "the perfect food" in this podcast from HowStuffWorks.com.

What is the right way to remove a leech?

podcast@howstuffworks.com (BrainStuff) — Mon, 20 Jul 2009 11:03:59 -0400

People have cooked up all sorts of ways to remove leeches over the years, but the simplest is still the most effective. Discover how to safely detach a leech using your hands in this podcast from HowStuffWorks.com.

How do honeybees make honey?

podcast@howstuffworks.com (BrainStuff) — Fri, 17 Jul 2009 10:10:36 -0400

When it comes to making honey, bees are skilled chemists. Discover how they use enzymes to turn sugary flower nectar into a sweet, stable food source in this podcast from HowStuffWorks.com.

Why do electric plugs have holes?

podcast@howstuffworks.com (BrainStuff) — Wed, 15 Jul 2009 12:20:16 -0400

You might have noticed that plugs for electric appliances have two holes. There are three reasons for these apertures -- find out what they are in this podcast from HowStuffWorks.com.

What is a medical leech?

podcast@howstuffworks.com (BrainStuff) — Mon, 13 Jul 2009 11:46:44 -0400

Medical leeches are raised in captivity and help patients heal wounds. Discover how leeches and other parasites are used for medical purposes in this podcast from HowStuffWorks.com.

What exactly is pastrami?

podcast@howstuffworks.com (BrainStuff) — Fri, 10 Jul 2009 10:38:38 -0400

Like cheese, pastrami is a good example of old-fashioned food preservation techniques. Find out how corned beef becomes pastrami in this podcast from HowStuffWorks.com.

Why are my power bills so high?

podcast@howstuffworks.com (BrainStuff) — Wed, 08 Jul 2009 12:40:11 -0400

When it comes to energy usage, heating and cooling appliances contribute the most to your power bill. Tune in to find out which appliances are the most power-hungry -- and why -- in this podcast from HowStuffWorks.com.

How does pressure-treated lumber work?

podcast@howstuffworks.com (BrainStuff) — Mon, 06 Jul 2009 11:25:56 -0400

Treating lumber with chemicals is an effective way to protect wood from pests and other organisms. Find out why pressure-treated lumber holds up better -- and how it works -- in this podcast from HowStuffWorks.com.

How can an electric toothbrush recharge its batteries?

podcast@howstuffworks.com (BrainStuff) — Fri, 03 Jul 2009 11:57:34 -0400

An electric toothbrush gets power from its base without the help of metal contacts. Find out how this sealed system works in the following podcast from HowStuffWorks.com.

How do neon and fluorescent lights differ?

podcast@howstuffworks.com (BrainStuff) — Wed, 01 Jul 2009 10:45:21 -0400

Neon and fluorescent lights differ in several ways, including bulb shape, color of light emitted and substances used to produce that light. Find out how neon and fluorescent lights work in this podcast from HowStuffWorks.com.

How do hopping cars work?

podcast@howstuffworks.com (BrainStuff) — Mon, 29 Jun 2009 10:54:27 -0400

Lowriders are vehicles that ride very low to the ground and are often equipped with hydraulics systems that allow the cars to "hop." Learn more in this podcast from HowStuffWorks.com.

How does an Indiglo watch work?

podcast@howstuffworks.com (BrainStuff) — Fri, 26 Jun 2009 10:46:17 -0400

An Indiglo watch works a lot like a neon sign, getting its signature "glow" from electroluminescence. Tune in to hear Marshall Brain explain the finer points of Indiglo watch technology in this podcast from HowStuffWorks.com.

How do sodium acetate heat pads work?

podcast@howstuffworks.com (BrainStuff) — Wed, 24 Jun 2009 10:30:22 -0400

Sodium acetate heat pads start out as a pouch of liquid and crystallize into a warm solid. Explore the fascinating chemistry that makes these heat pads work in this podcast from HowStuffWorks.com.

How does water desalination work?

podcast@howstuffworks.com (BrainStuff) — Mon, 22 Jun 2009 10:33:56 -0400

Most of the water on the planet is salty, so people have come up with various ways to turn it into freshwater. Explore three methods of desalinating water in this podcast from HowStuffWorks.com.

How do self-winding watches work?

podcast@howstuffworks.com (BrainStuff) — Fri, 19 Jun 2009 09:09:42 -0400

Self-winding watches keep the time with the help of a piece of metal, gravity and the natural movement of your arm. Tune in to learn more about self-winding watches in this podcast from HowStuffWorks.com.

What are frankincense and myrrh?

podcast@howstuffworks.com (BrainStuff) — Wed, 17 Jun 2009 11:21:45 -0400

You might recognize frankincense and myrrh from the Biblical story of Jesus, but have you ever wondered exactly what they are? Tune in to get the skinny on frankincense and myrrh in this podcast from HowStuffWorks.com.

How can turbines change our energy future?

podcast@howstuffworks.com (BrainStuff) — Mon, 15 Jun 2009 11:51:38 -0400

Gas turbine engines often power jet airplanes and helicopters, but they may turn up in other applications in the near future. Discover how turbine engines work in this podcast from HowStuffWorks.com.

What is a stratospheric aerosol?

podcast@howstuffworks.com (BrainStuff) — Fri, 12 Jun 2009 12:51:24 -0400

Stratospheric aerosols have been proposed as a new way to combat global warming. Discover how stratospheric aerosols would work in this podcast from HowStuffWorks.com.

What is a tank engine?

podcast@howstuffworks.com (BrainStuff) — Wed, 10 Jun 2009 11:10:43 -0400

You've probably heard of the beloved character Thomas the Tank Engine, but have you ever wondered what makes him a tank engine? Discover what sets Thomas apart from his locomotive pals in this podcast from HowStuffWorks.com.

How do space mirrors work?

podcast@howstuffworks.com (BrainStuff) — Mon, 08 Jun 2009 13:19:57 -0400

Mirrors placed in space could deflect excessive sunlight and combat global warming trends. Find out more about space mirrors in this podcast from HowStuffWorks.com.

How do the engines breathe in diesel submarines?

podcast@howstuffworks.com (BrainStuff) — Fri, 05 Jun 2009 09:40:54 -0400

Diesel submarines are actually hybrid vehicles. Find out why -- and exactly how they work -- in this podcast from HowStuffWorks.com.

How do CD-R discs work?

podcast@howstuffworks.com (BrainStuff) — Wed, 03 Jun 2009 10:58:12 -0400

Unlike a regular CD, a CD-R has a special dye layer that allows you to imprint data on it. Discover the mechanics of CD-R discs in this podcast from HowStuffWorks.com.

Where do bullets go when guns are fired into the air?

podcast@howstuffworks.com (BrainStuff) — Mon, 01 Jun 2009 10:59:55 -0400

When people fire guns into the air in a celebratory manner, those bullets have to go somewhere. Find out how high fired bullets can go -- and why they can be dangerous -- in this podcast from HowStuffWorks.com.

How do scratch-and-sniff stickers work?

podcast@howstuffworks.com (BrainStuff) — Fri, 29 May 2009 09:08:37 -0400

Scratch-and-sniff stickers are novelties that delight both children and adults. Sniff out the ingenious technology that makes them work in this podcast from HowStuffWorks.com.

How does a dollar bill changer work?

podcast@howstuffworks.com (BrainStuff) — Wed, 27 May 2009 12:08:22 -0400

A dollar bill changer doesn't just have to sense a bill's denomination -- it also needs to be able to tell whether bills are fake. Join Marshall Brain as he breaks down the science behind bill changers in this podcast from HowStuffWorks.com.

What happens when you press Alt and F4?

podcast@howstuffworks.com (BrainStuff) — Mon, 25 May 2009 15:28:52 -0400

The alt-f4 key combination is a faster way to close a window on your computer. Learn more about this and several other keyboard shortcuts in this podcast from HowStuffWorks.com.

How do candles work?

podcast@howstuffworks.com (BrainStuff) — Fri, 22 May 2009 09:38:28 -0400

Before there were light bulbs, candles made the world a brighter place. Discover the ingenious technology behind candles in this podcast from HowStuffWorks.com.

How do Mexican jumping beans work?

podcast@howstuffworks.com (BrainStuff) — Wed, 20 May 2009 11:25:36 -0400

Although Mexican jumping beans don't actually jump, they're definitely more active than your average bean. Find out how a moth makes them move in this podcast from HowStuffWorks.com.

How does dry ice work?

podcast@howstuffworks.com (BrainStuff) — Mon, 18 May 2009 13:08:30 -0400

Dry ice is different from regular ice in several ways. Find out what makes dry ice so unique -- and why it's so good for transporting perishables over long distances -- in this podcast from HowStuffWorks.com.

What causes that howling sound in PA systems?

podcast@howstuffworks.com (BrainStuff) — Fri, 15 May 2009 13:08:47 -0400

A public address system's speakers emit strange noises, or feedback, when sound gets re-amplified. Get a detailed explanation of how feedback occurs in this podcast from HowStuffWorks.com.

How does a hybrid car work?

podcast@howstuffworks.com (BrainStuff) — Wed, 13 May 2009 13:02:21 -0400

Hybrid cars combine electric motors and smaller gasoline engines in an attempt to increase efficiency. Find out exactly how they work in this podcast from HowStuffWorks.com.

Why is dry ice dangerous?

podcast@howstuffworks.com (BrainStuff) — Mon, 11 May 2009 09:32:57 -0400

Dry ice is different from regular ice because it's extremely cold and it emits carbon dioxide. Discover why the substance can be dangerous -- and safe ways to handle it -- in this podcast from HowStuffWorks.com.

What's the birthday paradox?

podcast@howstuffworks.com (BrainStuff) — Fri, 08 May 2009 07:17:19 -0400

In a group of 20, there's a 50/50 chance that two people will have the same birthday; this is called the birthday paradox. Find out how it works in this podcast from HowStuffWorks.com.

What is market capitalization?

podcast@howstuffworks.com (BrainStuff) — Wed, 06 May 2009 13:22:54 -0400

If all the money in the US only totals 8 trillion dollars, how can the New York Stock Exchange have stocks valued at 26 trillion dollars? Tune in as Marshall Brain breaks down the practice of stock capitalization in this podcast from HowStuffWorks.com.

What is sodium nitrate?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 04 May 2009 10:25:00 -0400

You'll find sodium nitrate in lots of pink meats like hot dogs and salami, but why? And is it bad for you? Find out what's up with sodium nitrate in this podcast from HowStuffWorks.com.

How does the oxygen sensor in a car work?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 01 May 2009 10:18:00 -0400

All new cars sport oxygen sensors that are designed to cut down emissions and keep the engine running smoothly. Find out exactly how these sensors work in this podcast from HowStuffWorks.com.

How do motion sensors work?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 29 Apr 2009 06:41:00 -0400

There are many kinds of motion sensors, from active to passive systems. Get the scoop on how myriad motion sensing systems work in this podcast from HowStuffWorks.com.

What would happen on a carousel moving at the speed of light?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 27 Apr 2009 15:41:00 -0400

If you could spin a carousel fast enough, would time stand still for the people on the carousel? Theoretically, it's a reasonable assumption. Join Marshall Brain as he breaks down the speed of light and time in this podcast from HowStuffWorks.com.

Why does my hard drive make that churning sound?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 24 Apr 2009 07:10:00 -0400

Inside the hard drive of many computers, a small arm moves across the face of the hard disk. Tune in to this podcast from HowStuffWorks.com to discover how the movement of this arm produces sound -- and why the arm must move to load files.

How does a Fresnel lens work?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 22 Apr 2009 07:32:00 -0400

The thin piece of plastic called a Fresnel lens solves some of the problems inherent in traditional magnifying lenses. Learn more about the benefits and weaknesses of Fresnel lenses in this podcast from HowStuffWorks.com.

How does a Crooke's radiometer work?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 20 Apr 2009 09:49:00 -0400

Vacuums and light combine to power a Crooke's radiometer -- but how does it work? Listen in and learn more about the mechanisms inside the radiometer in this podcast from HowStuffWorks.com.

How is wire measured?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 17 Apr 2009 09:49:00 -0400

In the United States, wires are measured by diameter using a standard called AWG, or American Wire Gauge. Discover how the AWG system works -- and where it came from -- in this podcast from HowStuffWorks.com.

How does an upside down airplane's engine get fuel?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 15 Apr 2009 10:15:00 -0400

Airplanes rely on gravity to disperse fuel to the engine, but what happens when the plane is flying upside down? Tune in to this podcast from HowStuffWorks.com to discover ways that acrobatic planes fly upside down without crashing.

What's that bumpy stuff on my ceiling?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 13 Apr 2009 09:50:00 -0400

That popcorn-like stuff on your ceiling is actually a specific kind of ceiling finish. Tune in to this podcast from HowStuffWorks.com to find out what this treatment is -- and why it's so popular.

How does popcorn work?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 10 Apr 2009 07:32:00 -0400

Popcorn is a ubiquitous snack, but there's nothing commonplace about its creation. How does a kernel of corn become a puffed white treat? Find out in this podcast from HowStuffWorks.com.

Is there a way to detect illegal phone taps?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 08 Apr 2009 07:32:00 -0400

Tapping into someone's phone line is relatively easy to do on a land line. Fortunately, phone taps are easy to detect. Tune in to this podcast from HowStuffWorks.com to get Marshall Brain's tips on ferreting out illegal phone taps.

How does an oxygen canister on an airplane work?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 06 Apr 2009 11:32:00 -0400

When you think of storing oxygen, metal tanks full of gas might come to mind. There's also a chemical method -- tune in to this podcast from HowStuffWorks.com to learn about how oxygen canisters work.

How does nitrous oxide help an engine perform better?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 03 Apr 2009 11:30:00 -0400

Nitrous oxide boosts engine power in two significant ways. Find out exactly how nitrous works its magic in this podcast from HowStuffWorks.com.

How do nail penny measurements work?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 01 Apr 2009 08:00:00 -0400

Nails are measured by a unit called a penny. This podcast from HowStuffWorks.com explains what the penny designation means -- and where it comes from.

Can you explain the diameter measurements used in bullets?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 30 Mar 2009 20:00:00 +0000

Bullets are measured by calibers, which indicate their diameter in inches. Find out more about bullets and measurement in this podcast from HowStuffWorks.com.

Can grilling meat really cause cancer?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 23 Mar 2009 12:00:00 GMT

Lots of people like to grill their meat, but this popular cooking method has been linked to cancer. Discover how chemical reactions make grilled meat potentially carcinogenic in this podcast from HowStuffWorks.com.

How does gravity work?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 20 Mar 2009 12:00:00 GMT

Gravity affects us every single day, but how does this oh-so-common force of nature work? Tune in to this podcast from HowStuffWorks.com to take a look at the nuts and bolts of gravity.

How quickly does hair grow?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 18 Mar 2009 12:00:00 GMT

On average, human hair grows a small amount each day. Listen in as Marshall Brain explains hair growth in this podcast from HowStuffWorks.com.

How long can a germ live in a room?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 16 Mar 2009 12:00:00 GMT

How long can a germ last outside the body? It depends. Tune in to this podcast from HowStuffWorks.com to find out how different germs fare outside the body.

How do fog machines work?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 13 Mar 2009 12:00:00 GMT

There are several types of fog machines, each with specific advantages and disadvantages. Listen in to learn more about fog machines.

How does a chicken's egg get its shell?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 11 Mar 2009 12:00:00 GMT

Which came first -- the chicken or the egg? Listen in as Marshall Brain gives the technical answer -- and takes a look at the science behind eggshell formation -- in this podcast from HowStuffWorks.com.

Are florescent bulbs really more efficient?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 09 Mar 2009 12:00:00 GMT

Customers are increasingly choosing long-lasting alternatives to traditional incandescent lights. But are florescent lightbulbs really more efficient than traditional lightbulbs? Listen in and find out in this podcast from HowStuffWorks.com.

How Car Thermostats Work

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 06 Mar 2009 13:00:00 GMT

Any liquid-cooled car engine has a thermostat that blocks the flow of coolant to the radiator. Learn how the thermostat works to reduce wear, deposits and emissions in this podcast from HowStuffWorks.com.

Why can boats float on water?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 04 Mar 2009 13:00:00 GMT

If a boat weighs 1,000 pounds, it will sink into the water until it displaces 1,000 pounds of water. Tune in to learn how the shape of a boat allows it to displace enough water to float in this podcast from HowStuffWorks.com.

How the Virtual First-Down Line Works

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 02 Mar 2009 13:00:00 GMT

Virtual first down lines are used to indicate where play resumes in football -- but how do they work? Listen in as Marshall Brain explains how the technology superimposes a virtual line in this podcast on HowStuffWorks.com.

How does hemp work?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 27 Feb 2009 13:00:00 GMT

Hemp fibers are coarse and strong, perfect for things like rope -- hemp is also more environmentally friendly than many other crops. Listen in as Marshall Brain takes a look at the controversy surrounding hemp in this podcast from HowStuffWorks.com.

What is dioxin?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 25 Feb 2009 13:00:00 GMT

Dioxin is an organic chemical that consists of benzene, oxygen and chlorine. This chemical is also toxic. Tune in to learn more about dioxin and Agent Orange in this podcast from HowStuffWorks.com.

How do bake and broil settings differ?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 23 Feb 2009 13:00:00 GMT

Kitchen ovens typically have two settings: bake and broil. What's the difference between the two? Explore the science behind baking and broiling in this podcast from HowStuffWorks.com.

How Activated Charcoal Works

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 20 Feb 2009 13:00:00 GMT

If you look on the label of a water filter, you'll often see the filter contains activated charcoal -- but what exactly is this stuff? Tune in as Marshall Brain explains the nature of activated charcoal in this podcast from HowStuffWorks.com.

How do astronomers measure distance?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 18 Feb 2009 13:00:00 GMT

Since astronomers cannot actually travel to a star, they rely on two ingenious methods to measure a star's distance from earth. Listen in as Marshall Brain breaks down the science of space measurement in this podcast from HowStuffWorks.

Why do hurricanes follow such peculiar tracks?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 16 Feb 2009 13:00:00 GMT

Hurricanes are enormously destructive, and sometimes seem to have a mind of their own. Tune in to this HowStuffWorks podcast to learn more about hurricanes.

How big is the universe?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 13 Feb 2009 13:00:00 GMT

If all the matter in the universe was pushed into one corner, how much space would it take up? Listen in as Marshall Brain explores the size of the universe in this podcast from HowStuffWorks.

How does SETI at home work?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 11 Feb 2009 13:00:00 GMT

SETI -- the Search for Extraterrestrial Intelligence -- is an enormous, global undertaking meant to detect signs of life beyond our solar system. Learn how you can help from home in this podcast from HowStuffWorks.

How often do state quarters come out?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 09 Feb 2009 13:00:00 GMT

A new state quarter is released about every ten weeks, and they're released according to the order in which each state joined the union. Learn more about state quarters in this podcast from HowStuffWorks.

What do the ul marks on so many products mean?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 06 Feb 2009 13:00:00 GMT

UL stands for 'underwriters laboratories,' a safety testing organization -- but what exactly does this group do, and why do they do it? Tune in and learn more about the UL mark in this podcast from HowStuffWorks.

What does the VTEC system do?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 04 Feb 2009 13:00:00 GMT

Every gasoline engine has valves that work with the camshaft to let air into and out of the engine. Learn how VTEC -- Variable Valve Timing and Lift Electronic Control -- allows engines to adapt their camshafts in this HowStuffWorks podcast.

What is silica gel?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 02 Feb 2009 13:00:00 GMT

Everyone's familiar with those little packets of silicate gel, found in thousands of products -- but what exactly do they do? Check out this HowStuffWorks podcast and learn more about silica gel.

Why doesn't the vacuum of space suck away Earth's atmosphere?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 30 Jan 2009 13:00:00 GMT

It's often said that "nature abhores a vacuum." If that's true, then why doesn't the vacuum of space suck away our atmosphere? Tune in as Marshall Brain explains the science behind vacuums in this HowStuffWorks podcast.

How can I gain pounds during the day and lose them at night?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 28 Jan 2009 13:00:00 GMT

Water is a very heavy substance -- just one galloon weighs 8 pounds. Check out this HowStuffWorks podcast to learn more about how the passage of water affects your weight.

What's the total amount of gold in the world?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 26 Jan 2009 13:00:00 GMT

Have you ever wondered how much gold the world has produced over time? How about platinum? Get the grand totals in this HowStuffWorks podcast.

What type of gas do racecars use?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 23 Jan 2009 13:00:00 GMT

Different types of racing vehicles require different types of fuel. Check out this HowStuffWorks podcast to learn more about the advantages and drawbacks of each fuel type.

What do those plastic recycling symbols means?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 21 Jan 2009 13:00:00 GMT

A typical recycling symbol on plastic looks like a triangle made of arrows. There are seven different types of plastic indicated by the symbols. Check out this HowStuffWorks podcast to learn the difference between each of these plastic types.

What's in mothballs?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 19 Jan 2009 13:00:00 GMT

There are two different types of mothballs, each of which contains separate moth-killing ingredients. Tune in as Marshall Brain explains the science behind mothballs in this podcast from HowStuffWorks.

What is the heat index?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 16 Jan 2009 13:00:00 GMT

Your body has efficient ways to release excess heat, but high temperatures and high humidity create a sticky situation. Find out how the heat index keeps you abreast of dangerous heat situations in this HowStuffWorks podcast.

Why do your ears pop when you dive in a deep pool?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 14 Jan 2009 13:00:00 GMT

Have you ever wondered why your ears pop when you plunge into the deep end of a swimming pool? It's all about keeping your ear drum happy, as this HowStuffWorks podcast reveals.

How do you make clear ice cubes?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 12 Jan 2009 13:00:00 GMT

What makes some ice cloudy and some perfectly clear? Discover the answer and learn how to make your own batch of clear cubes in this HowStuffWorks podcast.

How many balloons would it take to life someone off the ground?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 09 Jan 2009 13:00:00 GMT

Balloons are often filled with helium, which has a lifting force of one gram per meter. It's possible to assemble enough balloons to lift yourself from the ground -- but how many balloons does it take? Tune into this HowStuffWorks podcast to learn more.

How does chlorine bleach work?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 07 Jan 2009 13:00:00 GMT

When you buy a gallon of bleach at the grocery store, what are you actually purchasing? Check out this HowStuffWorks podcast to learn more about bleach, chlorine and the chemical reactions behind these products.

Can water go bad?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 05 Jan 2009 13:00:00 GMT

Many people store water for emergencies -- but is it true that water sitting for too long will go bad? Listen in as Marshall Brain breaks down the science of water purification in this HowStuffWorks podcast.

How can you figure out how far away lightning struck?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 02 Jan 2009 13:00:00 GMT

Check out this podcast from HowStuffWorks to learn how to gauge the distance of a lightning strike with a simple equation.

What's the difference between LPG or natural gas?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 31 Dec 2008 13:00:00 GMT

Since liquefied petroleum gas and natural gas have very different properties, it's always important to specify which substance you will use when buying an appliance. Check out this podcast from HowStuffWorks to learn more.

Why is carbon monoxide so poisonous?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 29 Dec 2008 13:00:00 GMT

The structure of hemoglobin causes oxygen to bind loosely to iron -- however, carbon monoxide binds very tightly to the blood's iron, reducing your ability to breathe. Check out this podcast from HowStuffWorks to learn more.

How Botulism Works

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 26 Dec 2008 13:00:00 GMT

Botulism bacteria creates a type of poisoning and paralysis. Check out this HowStuffWorks podcast to learn more about the effects and spread of botulism.

What is the ideal temperature for a refrigerator?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 24 Dec 2008 13:00:00 GMT

The purpose of a refrigerator is to slow the growth of bacteria -- since some foods don't freeze well, they can't be placed in a freezer. Check out this HowStuffWorks podcast to learn the ideal temperature for your refrigerator.

Does adding RAM make a computer faster?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 22 Dec 2008 13:00:00 GMT

Adding random access memory -- or RAM -- to your computer can, to a degree, make the machine faster. Check out this podcast from HowStuffWorks to learn how RAM affects your computer.

What does 'octane' mean?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 19 Dec 2008 13:00:00 GMT

The octane rating of gasoline indicates how much a fuel can be compressed before it ignites. When gas ignites due to compression, knocking occurs within the engine. Check out this HowStuffWorks podcast to learn more about octane and engines.

How Contrails Work

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 17 Dec 2008 13:00:00 GMT

The clouds that some jets form on certain days are called condensation trails -- or contrails. Check out this HowStuffWorks podcast to learn more about condensation, weather and jets.

How Vacuums Work

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 15 Dec 2008 13:00:00 GMT

If a balloon was filled by a vacuum -- rather than helium or air -- would it float? Check out this HowStuffWorks podcast to learn the science behind balloons and vacuum.

What is an MRE?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 12 Dec 2008 13:00:00 GMT

An MRE -- or meal ready to eat -- contains precooked, sterilized food originally made to nourish soldiers. Check out this HowStuffWorks podcast to learn more about the retort packaging that makes MREs possible.

How Diaper Crystals Work

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 10 Dec 2008 13:00:00 GMT

Most disposable diapers contain a crystalline, absorbent substance called sodium polyacrylate. Learn how this polymer helps contain messes -- and some of the controversy surrounding this substance -- in this podcast from HowStuffWorks.

How Case Hardening Works

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 08 Dec 2008 13:00:00 GMT

Steel is an amazing metal. Many different varieties of steel exist, and some types of steel are better for certain tasks. Check out this HowStuffWorks podcast to learn how case hardening allows manufactures to get the best of multiple types of steel.

How Inkjet Printers Work

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 05 Dec 2008 13:00:00 GMT

Inkjet printers shoot extremely small droplets of ink -- thirty dots per millimeter or more -- onto paper to produce a picture. Check out this HowStuffWorks podcast to learn more about inkjet printers.

How Polygraph Machines Work

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 03 Dec 2008 13:00:00 GMT

Also known as 'lie detectors,' polygraphs are used to record an individual's vital signs, such as breathing rate, pulse, and so forth. Check out this podcast from HowStuffWorks to learn more about polygraphs and the art of lie detection.

How V-chips Work

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 01 Dec 2008 13:00:00 GMT

As of 1999, all TV sets sold in the Untied States are required to contain a viewer-control chip, also known as a v-chip. Check out this HowStuffWorks podcast to learn more about v-chips and television ratings.

How Replacing Toilets Works

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 28 Nov 2008 13:00:00 GMT

A family of four can consume more than 300 galloons of water per day. Old toilets use 5 galloons per flush, and this water use quickly adds up. Check out this HowStuffWorks podcast and learn why cities across the US are replacing their old commodes.

Can I see the stuff astronauts left on the moon?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 26 Nov 2008 13:00:00 GMT

Using a telescope to view the moon is fascinating -- but could we see the leftovers of NASA's lunar expeditions? Check out this HowStuffWorks podcast to learn more about lunar landings and telescopes.

How the Horizon Works

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 24 Nov 2008 13:00:00 GMT

When you stand at the water's edge and look out toward the horizon, how far away can you actually see? Check out this HowStuffWorks podcast to learn more about the horizon and the curvature of Earth.

How much fuel does an international airplane use for a trip?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 21 Nov 2008 13:00:00 GMT

A Boeing 747 uses approximately one galloon of fuel per second -- over the course of a ten hour flight, it might burn 36,00 galloons of fuel. How does this compare to a car? Check out this HowStuffWorks podcast to learn more about airplane mileage.

What are MP3 files and how do they work?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 19 Nov 2008 13:00:00 GMT

CDs store music using 44,100 16-bit digital samples per second, adding up to about 10 megabytes per minute -- and that's too large to move easily move across the internet. Check out this HowStuffWorks podcast to learn how MP3 files solve this problem.

How Sea Monkeys Work

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 17 Nov 2008 13:00:00 GMT

Sea Monkeys are a type of brine shrimp. These shrimp create remarkably resilient eggs called cysts. Check out this HowStuffWorks podcast and learn more about the secret behind Sea Monkeys.

How much oxygen does a person consume in a day?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 14 Nov 2008 13:00:00 GMT

The average adult at rest inhales and exhales between 7 to 8 liters of air each minutes. Check out this HowStuffWorks podcast to learn how much oxygen a person uses during a day of inhalation and exhalation.

How Marshmallows Work

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 12 Nov 2008 13:00:00 GMT

Marshmallows are an old candy -- they've been around since the 1800s. The name marshmallow comes from the original recipe, which called for sap from the marshmallow plant. Check out this HowStuffWorks to learn more about the history of marshmallows.

What is a lightyear?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 10 Nov 2008 13:00:00 GMT

A lightyear is a way of measuring distance -- specifically, the distance light can travel in one year. Just how far is that? Check out this podcast from HowStuffWorks to learn more about astronomy.

Why are traffic lights being replaced with LEDs?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 07 Nov 2008 13:00:00 GMT

Across the country, incandescent traffic lights are being replaced with LED arrays. Check out this podcast from HowStuffWorks to learn more about the advantages of LED traffic lights.

What are hot dogs made from?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 05 Nov 2008 13:00:00 GMT

Hot dogs were first created in Frankfurt, Germany. But what exactly are they made from? Check out this HowStuffWorks podcast to learn more about the mysterious ingredients of hot dogs.

Why is there a small hole on the top of spray can lids?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 03 Nov 2008 13:00:00 GMT

Many spray can lids have a tiny hole at the top. Check out this HowStuffWorks podcast to learn more about spray cans, shipping, and air pressure.

What Happens to Blood During the Embalming Process?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 31 Oct 2008 12:00:00 GMT

The embalming process is designed to keep the body preserved until the funeral, but how exactly does it work and what happens to bodily fluids like blood? Get the gory details in this HowStuffWorks podcast.

What causes poison ivy blisters?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 29 Oct 2008 12:00:00 GMT

When people get a rash from poison ivy, their bodies are reacting to a chemical called urushiol. Check out this HowStuffWorks podcast to learn more about poison ivy rashes.

What do the yellow and black wires in a home telephone jack do?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 27 Oct 2008 12:00:00 GMT

It only takes two wires to connect a phone, but most house wiring contains four wires. Check out this HowStuffWorks podcast to learn why.

How the Lightsaber Effect Works

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 24 Oct 2008 12:00:00 GMT

Unfortunately lightsabers aren't real. The technique used to produce the lightsaber effect is simple, but tedious. Check out this HowStuffWorks podcast to learn more about the special effects behind lightsabers.

Why doesn't paper money disintegrate in the washing machine?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 22 Oct 2008 12:00:00 GMT

Normal paper is made of cellulose from trees, but paper money is made from cotton and linen fibers. Learn how this makes paper money more water-resistant in this podcast from HowStuffWorks.

How are old black and white movies colorized?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 20 Oct 2008 12:00:00 GMT

Adding color to black and white movies is incredibly tedious. To speed up the process, the coloring is done on a computer, using a digital version of the film. Learn more about colorization in this HowStuffWorks podcast.

How hair length works

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 17 Oct 2008 12:00:00 GMT

As hair cells form in follicles, they push other cells out of the follicle. Check out this HowStuffWorks podcast to learn more about your hair's growth and rest phases.

Why does hydrogen peroxide foam when you put it on a cut?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 15 Oct 2008 12:00:00 GMT

Hydrogen peroxide's foaming action is due to the catalase in blood and cells. Check out this HowStuffWorks podcast to learn how hydrogen peroxide interacts with catalase.

What is fertilizer, and why do plants need it?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 13 Oct 2008 12:00:00 GMT

In order for a plant to grow and thrive, it needs a number of different chemical elements. Check out this podcast from HowStuffWorks to learn more about fertilizer.

Why do apples and potatoes turn brown when you slice them?

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 10 Oct 2008 12:00:00 GMT

All cells contains thousands of enzymes, and each of these enzymes is necessary for the cell. Check out this HowStuffWorks podcast to learn which enzymes cause apples and potatoes to turn brown upon exposure to oxygen.

What is an anti-siphon valve?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 08 Oct 2008 12:00:00 GMT

In houses with a built-in sprinkler system, anti-siphon valves prevent pesticides, pet waste, and other contaminants from polluting the home's water source. Check out this HowStuffWorks podcast to learn more about anti-siphon valves.

How do exhaust headers work to improve an engine's performance?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 06 Oct 2008 12:00:00 GMT

The goal of headers is to make it easier for an engine to push out exhaust gasses. Check out this HowStuffWorks podcast to learn how exhaust headers channel exhaust gasses and improve engine efficiency.

How a GFCI outlet works

podcast@howstuffworks.com (HowStuffWorks.com) — Fri, 03 Oct 2008 12:00:00 GMT

A normal 120 volt outlet in the US has two vertical slots and a role hole centered below the slots -- the outlets with a pair of red and black 'test' and 'reset' buttons are known as GCFI outlets. Check out this HowStuffWorks podcast to learn more.

What is chewing gum made of?

podcast@howstuffworks.com (HowStuffWorks.com) — Wed, 01 Oct 2008 12:00:00 GMT

Up until World War II, chewing gum was made of a substance called chicle. Check out this HowStuffWorks podcast to learn more about the ingredients of modern chewing gum.

Could anti-lock brakes detect a flat?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 29 Sep 2008 12:00:00 GMT

By using a computer to monitor the rotation of the car's wheels, an anti-lock braking system helps drivers avoid skids. Could this computer also monitor flat tires? Check out this HowStuffWorks podcast to learn more about brake systems.

Why do the plugs on some appliances have two prongs and others have three?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 26 Sep 2008 12:00:46 GMT

When you look at a normal 120-volt outlet in the United States, there are two vertical slots and then a round hole centered below. Take a look at this HowStuffWorks article to learn why appliance cords are shaped this way.

What is a decibel, and how is it measured?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 24 Sep 2008 12:00:46 GMT

The decibel unit is used to measure the intensity of a sounds. Check out our HowStuffWorks article to learn more about the decibel scale.

How Gun Silencers Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 22 Sep 2008 12:00:46 GMT

The sound of gunfire is incredibly loud, and it is amazing that anything is able to silence a firearm. However, the principle behind a gun silencer is surprisingly simple. Check out our HowStuffWorks article to learn more about silencers.

How Heart Bypass Operations Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 19 Sep 2008 12:00:46 GMT

Since the heart is a muscle, it relies on the oxygen and nutrients contained in blood. This blood is supplied by arteries on the exterior of the heart -- when these arteries are blocked, a heart attack results. Take a look at our HowStuffWorks article to

How much does it cost to run an electric blanket?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 17 Sep 2008 12:00:46 GMT

The electric company bills its customer by the kilowatt-hour. The number of watts a device uses times the number of hours you leave it on tells you number of watt-hours it consumes, and divided by 1,000 will convert the measurement to kilowatt-hours. Chec

How do Pop Rocks candy work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 15 Sep 2008 12:00:46 GMT

Hard candy (like a lollypop or a Jolly Rancher) is made from sugar, corn syrup, water and flavoring. Check out our HowStuffWorks article to learn how conventional candy is combined with carbon dioxide to produce Pop Rocks.

What is the difference between jelly jam and preserves? And What is Jello?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 12 Sep 2008 12:10:57 GMT

Jam, jelly, and preserves are all made from fruit mixed with sugar and pectin. Jell-O, on the other hand, is completely different. Take a look at our HowStuffWorks article to learn more.

How does gravity assist with interplanetary satellites?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 10 Sep 2008 12:11:57 GMT

The idea behind a gravity assist is to use a planet's motion to accelerate a satellite. Check out our article on HowStuffWorks to learn more about the effects of gravity on satellites.

How children from the same parents look so different?

podcast@howstuffworks.com (HowStuffWorks.com) — Mon, 08 Sep 2008 12:12:57 GMT

Every person has a set of chromosomes, or coiled strands of DNA. Check out this HowStuffWorks podcast to learn how chromosomes combine to promote variation from one generation to the next.

How Catapults Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 05 Sep 2008 12:01:53 GMT

There are three different technologies that fall into the catapult category: the ballista, the trebuchet and the catapult. Check out this HowStuffWorks podcast to learn more about the differences between catapult technologies.

What does the computer in a car do?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 03 Sep 2008 12:00:53 GMT

All cars manufactured today contain at least one computer -- but what does it do? Check out this HowStuffWorks podcast to learn more about car computers.

How Water Softener Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 29 Aug 2008 12:00:12 GMT

The idea behind a water softener is simple: the calcium and magnesium ions in hard water are replaced with sodium ions. Learn more about the harmful effects of hard water -- and the benefits of soft water -- in this HowStuffWorks podcast.

How Carbon Chains Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 27 Aug 2008 12:00:12 GMT

Learn how the length of hydrocarbon atom chains have different properties, producing substances such as kerosene, methane and other forms of fossil fuel. Check out this HowStuffWorks podcast to learn more about fossil fuels.

Do the humps on camels hold water?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 25 Aug 2008 17:00:12 GMT

The camel's hump is a giant deposit of fat that lets the camel survive up to 2 weeks without food. Learn more about camels in this HowStuffWorks podcast.

Why does Alka-Seltzer fizz?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 20 Aug 2008 12:00:26 GMT

The fizzing you see when you drop an Alka-Seltzer tablet in water is the same sort of fizzing that you see from baking powder. This reaction is caused by an acid reacting with a base. Check out this HowStuffWorks podcast to learn more.

What causes the banging noise in my home's pipes?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 18 Aug 2008 12:00:26 GMT

The problem of pipes banging on a wall is often called "water hammer." Check out this HowStuffWorks podcast to learn more about this phenomenon.

What is the difference between a turbo-charger and a super-charger?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 15 Aug 2008 12:00:26 GMT

Both turbo- and super-chargers are forced inductions systems, meaning they compress the air flowing into the engine. This compression causes each cylinder of an engine to produce more power. Check out this HowStuffWorks article to learn more.

How Sonic Booms Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 13 Aug 2008 18:12:19 GMT

The sonic booms formed by planes are similar to the wakes left by boats in water. To learn more about sonic booms, check out this HowStuffWorks podcast.

How Catalytic Convertors Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 11 Aug 2008 18:13:19 GMT

Catalytic convertors convert hydrocarbons, carbon monoxide, and nitrogen oxides into three harmless chemicals, making the exhaust of a vehicle much cleaner.

How Liquid Smoke Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 08 Aug 2008 18:14:19 GMT

By cooling smoke, the hydrocarbons forming smoke can be condensed, thinned, and bottled in a liquid form. Learn about the process of bottling liquid smoke in this HowStuffWorks podcast.

How Phones Work During Power Outages

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 06 Aug 2008 18:15:19 GMT

Phone companies use generators to ensure that landline phones will work, even in the event of a power outage. Learn more about phone systems in this HowStuffWorks podcast.

How Light Wave Interference Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 04 Aug 2008 18:16:19 GMT

When white light hits a film of oil floating on water, most of it passes through the film, but some of the light is reflected off the top and bottom layers of the film. Check out this HowStuffWorks podcast to learn more about light wave interference.

How 3-Way Lightbulbs Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 01 Aug 2008 18:17:19 GMT

A 3-way bulb contains two filaments, and these filaments have differing wattages. Depending on the setting, the filaments operate separately or together to create the appropriate amount of light. Learn more about 3-way bulbs in this HowStuffWorks podcast.

How Breathing in a Submarine Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 30 Jul 2008 18:18:19 GMT

For air in a submarine to remain usable, three things must happen: The oxygen must be replenished as it is consumed, the carbon dioxide must be removed from the air, and the moisture in human breath must also be removed.

How Fever Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 28 Jul 2008 18:19:19 GMT

In this podcast, learn what causes a fever and what actually happens to the body when a fever occurs.

How Fountains in Rome Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 25 Jul 2008 18:20:19 GMT

Built before the invention of electric pumps, fountains in Rome were powered through an ingenious system of gravity, cisterns, and aqueducts. Learn more about fountains in Rome in this HowStuffWorks podcast.

How Cooking at High Altitudes Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 23 Jul 2008 18:21:19 GMT

The boiling point of water decreases as altitude increases -- generally, this temperature decreases by one degree for every 540 feet of altitude. Learn more about cooking at high altitudes in this podcast from HowStuffWorks.

How Nautical Miles Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 21 Jul 2008 18:22:19 GMT

One minute of arc on planet earth is equal to one nautical mile. Listen to this HowStuffWorks podcast and learn more about the measurement of nautical miles.

How Digital Answering Machines Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 18 Jul 2008 18:23:19 GMT

Today, most answering machines are digital, and use the same technology as a CD or MP3 player. Learn more about digital answering machines in this HowStuffWorks podcast.

How Maple Syrup Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 16 Jul 2008 18:24:19 GMT

The clear, thin sap of Maple trees must be boiled down to create maple syrup -- it takes about 30 to 40 gallons of sap to create one gallon of syrup. Check out this HowStuffWorks podcast to learn more about Maple syrup.

How Glowing Watch Hands Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 15:57:07 GMT

In many watches, phosphor is mixed with a radioactive element that continously charges the phosphor, powering glowing watch hands. Learn more about glowing watch hands in this HowStuffWorks podcast.

How Uninterruptible Power Supplies Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:43:07 GMT

An uninterruptible power supply protects computers against surges, spikes, sags, and total power failure. Check out this HowStuffWorks podcast to learn more about uninterruptible power supplies.

How the Corvette ZR1 Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:42:07 GMT

The 2009 Corvette ZR1 combines several technical innovations to produce a turbo-charged, eight-cylinder engine. Learn more about the Corvette ZR1 in this HowStuffWorks podcast.

How Gas Pumps Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:41:07 GMT

Next time you're filling up your tank at a gas station, ask yourself this: how does the nozzle know when the tank is full? Learn more about gas pumps in this HowStuffWorks podcast.

Why the Sky is Blue?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:40:07 GMT

As sunlight passes through the atmosphere, particles in the air scatter blue light more efficiently than any other color in the light spectrum, creating a blue sky. Learn more about the sky and light in this Brainstuff podcast.

How Radiation Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:39:07 GMT

Although most people are frightened by radiation, the truth is we are irradiated every day, both from cosmic rays in the sky, and radioactive elements in the ground. Learn more about radiation in this HowStuffWorks podcast.

What is the Difference Between a Carat and a Karat?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:38:07 GMT

Carats are used for diamonds, while karats are used for gold. Learn more about the difference between carats and karats in this HowStuffWorks podcast.

How Perceiving Earth as a Sphere Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:37:07 GMT

Is there any way that people could know the world is sphere while standing on the earth? Learn more about perceiving earth as a sphere in this HowStuffWorks podcast.

How Flatulance Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:36:07 GMT

Learn about the causes of gas (flatulence) in this podcast from Marshall Brain.

How Atomic Clocks Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:35:07 GMT

Unlike more conventional timepieces, atomic clocks use the resonant frequency of atoms to measure the passage of time. Learn more about atomic clocks in this Brainstuff podcast.

How Baking Powder Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:34:07 GMT

Baking powder is made of three components -- an acid, a base, and a filler. Check out this HowStuffWorks podcast to learn more about baking powder.

How Leap Years Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:33:07 GMT

A normal calendar years is 365 days long, but the earth actually takes 365.2422 days to completely orbit the sun. Learn more about leap years in this HowStuffWorks podcast.

How Red Eyes in Photographs Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:32:07 GMT

The flash of a camera is bright enough to cause a reflection off the human retina -- the red we see in these photos comes from the blood vessels in the eye. Learn more about red eyes and cameras in this HowStuffWorks podcast.

How Do Submarines Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:31:07 GMT

Submarines use oxygen generators to create oxygen from water. Learn more about oxygen in submarines in this HowStuffWorks podcast.

What is the Fastest Computer in the World?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:30:07 GMT

Although the speed of computers is growing exponentially, the human brain may handle roughly ten quadrillion instructions per second. Learn more about the world's fastest computer in this HowStuffWorks podcast.

How Do Vitamins Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:29:07 GMT

A vitamin is a small molecule the body needs but cannot manufacture on its own. Learn more about vitamins in this HowStuffWorks podcast.

How Night Vision Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:28:07 GMT

Although the human eye is able to adapt to wildly different environments, it takes a certain amount of time to adjust to sudden changes in light. Learn more about the chemicals powering the human eye in this HowStuffWorks podcast.

How Subprime Loans Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:27:07 GMT

Subprime loans are made to borrowers who do not qualify for the best market interest rates. Learn more about subprime loans in this HowStuffWorks podcast.

How Helium Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:26:07 GMT

The helium used in balloons is created by uranium interacting with natural gas. Learn more about helium and uranium in this HowStuffWorks podcast.

How Nanosolar Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:25:07 GMT

A company named Nanosolar is shaking up the alternative energy industry by offering solar technology at the lowest prices in history -- even cheaper than energy derived from coal. Learn more about Nanosolar in this HowStuffWorks podcast.

How Does Yawning Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:24:07 GMT

Just hearing about yawning can make you yawn, and no one is sure why. Learn more about yawns and yawning in this HowStuffWorks podcast.

How the Dow Jones Industrial Average Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:23:07 GMT

The Dow Jones Industrial Average tracks a variety of stocks to assist investors. Learn how the Dow Jones keeps tabs on the stock market.

How Lava Lamps Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:22:07 GMT

Liquid motion lamps -- or lava lamps -- use heat to create slight differences in the density of two liquids. Learn more about lava lamps and density in this Brainstuff podcast.

How Golf Ball Dimples Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:21:07 GMT

If you've ever looked at a golf ball, you've probably noticed it has dimples. But why is that? Learn the story behind dimpled golf balls in this Brainstuff podcast.

How Smoke Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:20:07 GMT

When you put a fresh piece of wood on a hot fire, volatile organic carbons in the wood evaporate, creating smoke. Learn more about smoke in this Brainstuff podcast.

How Ultra Hi-Def Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:19:07 GMT

A standard HD screen has roughly 2 million pixels per frame -- but an ultra HD has four times that resolution. Learn more about ultra hi-definition in this HowStuffWorks podcast.

How Dry Cleaning Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:18:07 GMT

Dry cleaning is not actually clean -- instead, it uses a petroleum solvent in place of water. Learn more about dry cleaning in this HowStuffWorks podcast.

How X-Ray Machines Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:17:07 GMT

An X-ray machine is essentially a camera that uses x-rays to expose the film, instead of visible light. Learn more about x-ray machines in this HowStuffWorks podcast.

How Dehumidifiers Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:16:07 GMT

Dehumidifiers remove moisture from the air -- but how does this actually work? Check out this HowStuffWorks podcast to learn more about dehumidifiers.

How Stealth Technology Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:15:07 GMT

Shaping an airplane a certain way -- or using materials that absorb radar waves -- causes a stealth aircraft to have the signature of a small bird, rather than an airplane.

How Starting A Car in Cold Weather Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:14:07 GMT

Cars are hard to start during cold weather for three reasons: gasoline evaporates less in cold temperatures, oil gets thicker in the cold, and the chemical reactions in cold batteries are slower than normal.

How Boogers and Mucuous Membranes Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jul 2008 13:13:07 GMT

Mucous contains mostly water and mucin -- a branched polysaccharide. When polysaccharides such as mucin or cornstarch are mixed with water, the result is a sticky substance.

How Zorbing Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 11 Jul 2008 16:00:07 GMT

A Zorb is a pair of inflatable balls large enough to contain a person. Zorbing is popular in New Zealand, and you can learn more about it in this HowStuffWorks podcast.

How Air Force One Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 09 Jul 2008 16:01:07 GMT

Air Force One is the presidential airfleet of the United States. Learn how Air Force One works in this HowStuffWorks podcast.

How Color Blindness Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 07 Jul 2008 15:59:07 GMT

Color blind individuals can suffer from an inability to differentiate between hues, and occasionally may not be able to see any colors at all. Learn more about color blindness in this HowStuffWorks podcast.

How Solar Balloons Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 04 Jul 2008 15:58:07 GMT

A solar balloon is propelled upward by absorbing solar energy and heating air inside the balloon. Learn more about solar balloons and solar energy in this HowStuffWorks podcast.

How Does Identity Theft Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 02 Jul 2008 15:56:07 GMT

Join Marshall Brain as he takes a look at the dangers of identity theft and what you can do to reduce those dangers. Learn more in this HowStuffWorks podcast.

How Satellite Radio Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 30 Jun 2008 15:55:07 GMT

Satellite radio connects consumers to a lot more channels than broadcast radio, and you hardly have to worry about losing reception. Learn more about satellite radio in this HowStuffWorks podcast.

How Machine Guns Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 27 Jun 2008 15:54:07 GMT

Machine guns are one of the most important innovations in recent military history. Learn about machine guns and automatic weapons in this HowStuffWorks podcast.

How Indiglo Watches Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 25 Jun 2008 15:53:07 GMT

In an indiglo watch, a very thin panel uses high voltage to energize phosphor atoms, producing light. Learn more about indiglo watches and electroluminescence in this HowStuffWorks podcast.

How Do Fainting Goats Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 23 Jun 2008 15:52:07 GMT

Due to a genetic disorder, fainting goats become paralyzed when they are startled. Learn more about fainting goats in this HowStuffWorks podcast.

How Does Green Building Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 20 Jun 2008 15:51:07 GMT

In this HowStuffWorks podcast on green building, learn more about creating sustainable buildings that reduce carbon footprints and use recycled material.

How Thermite Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 18 Jun 2008 15:50:07 GMT

Thermite is a metallic mixture used for various chemical reactions -- everything from railroad tracks to fireworks displays call for thermite. Learn about the chemical properties of thermite in this HowStuffWorks podcast.

How Life On Mars Might Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 16 Jun 2008 15:49:07 GMT

Has one of the Mars rovers discovered life on Mars? Learn more about life on Mars and other planets in this HowStuffWorks podcast.

How Climate Hoax Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 13 Jun 2008 15:48:07 GMT

Some scientists believe global warming is part of a cyclical temperature fluctuation, rather than a man-made event. Learn more about these climate skeptics in this HowStuffWorks podcast.

How Do Nuclear Bombs Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 11 Jun 2008 15:47:07 GMT

What is a nuclear bomb, and how does it work? Learn more about nuclear bombs with Marshall Brain in this HowStuffWorks podcast.

How the Pleo Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 09 Jun 2008 15:46:07 GMT

Although Pleo is a robot designed to look like a dinosaur, it can learn from situations, and appear incredibly lifelike. Learn more about pleo in this HowStuffWorks podcast.

How Fire Hydrants Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 06 Jun 2008 15:45:07 GMT

Fire hydrants are on nearly every street corner, but how do they work? Learn more about fire hydrants in this HowStuffWorks podcast.

How RTG Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 04 Jun 2008 15:44:07 GMT

Voyager II uses a radioisotope thermo-electric generator power to communicate with NASA. Learn more about RTG in this HowStuffWorks podcast.

How Does Nanotechnology Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 02 Jun 2008 15:43:07 GMT

In this HowStuffWorks podcast, Marshall Brain discusses the possibilities of nanotechnology, a multi-disciplinary study dealing with the manipulation of matter less than one billionth of a meter wide.

How Tasers Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 30 May 2008 15:42:07 GMT

A taser is a weapon that uses electricity to incapacitate targets from a distance. Learn more about tasers and electric shock in this HowStuffWorks podcast.

How the Six-Stroke Engine Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 28 May 2008 15:41:07 GMT

The six-stroke engine has the potential to increase the gas mileage of an internal combustion engine by forty percent, without adding any weight to the engine. Learn more about the six-stroke engine in this HowStuffWorks podcast.

How Superfund Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 26 May 2008 15:40:07 GMT

The superfund was established to locate and clean toxic waste sites in the U.S. To learn more about the superfund and toxic waste, check out this HowStuffWorks podcast.

How the World's Tallest Building Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 23 May 2008 15:39:07 GMT

Once completed, the Burj Dubai will become the world's tallest building. Learn more about the world's tallest building in this HowStuffWorks podcast.

How Glow In the Dark Products Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 21 May 2008 15:38:07 GMT

All glow-in-the-dark products contain phosphor, a substance that radiates visible light after it has been energized. Learn more about phosphor in this HowStuffWorks podcast.

How Eminent Domain Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 19 May 2008 15:37:07 GMT

Under the eminent domain law, private property may be annexed by local or federal government, and the private owner may be forced to sell their land for the purpose of public use. Learn more about eminent domain in this HowStuffWorks podcast.

How Rainbows Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 16 May 2008 15:36:07 GMT

When light enters raindrops, the drops act as tiny prisms. The angle of the light as it leaves each raindrop alters the visible color of the light, forming part of a rainbow.

How Gift Cards Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 14 May 2008 15:35:07 GMT

Although most businesses love gift cards, these cards have few -- if any -- advantages over actual cash. Learn more about gift cards in this HowStuffWorks podcast.

How Uranium Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 12 May 2008 15:34:07 GMT

Uranium can be used as a source of nuclear energy and a component in nuclear weapons. Learn more about uranium and nuclear energy in this HowStuffWorks podcast.

How PhosCheck Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 09 May 2008 15:32:07 GMT

PhosCheck is a long-term fire retardant that firefighters deploy from planes when combating forest fires. Learn more about PhosCheck in this HowStuffWorks podcast.

How the Linux Laptop Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 07 May 2008 15:31:07 GMT

The low-cost linux laptop niche is beginning to explode. Learn more about linux, laptops, and low-cost computing in this HowStuffWorks podcast.

How the Lightning GT Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 05 May 2008 15:30:07 GMT

The Lightning GT is a high-performance electric car that uses revolutionary technology to avoid the drawbacks of other electric vehicles. Learn more about electric cars and the Lightning GT in this HowStuffWorks podcast.

How Does 2020 Vision Works?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 02 May 2008 15:28:07 GMT

20-20 vision is a standard used to compare one person's vision to another's. Learn more about 20-20 vision in this podcast from HowStuffWorks.

How Do Barcodes Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 30 Apr 2008 15:27:07 GMT

UPC bar codes are used for almost any packaged product, and the bar codes are read by lasers. Learn more about UPC bar codes in this podcast from HowStuffWorks.

How Do Aircraft Carriers Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 28 Apr 2008 15:26:07 GMT

Aircraft carriers contain some of the most advanced technology in the world. Learn more about aircraft and aircraft carriers in this podcast.

How Much Money Is In The World?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 25 Apr 2008 15:25:07 GMT

How much money is in the world? This HowStuffWorks podcast explains how much money exists in the world, and how that money is measured.

Could You Power Your TV or Computer with a Bicycle?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 23 Apr 2008 15:23:07 GMT

Could you power a television or computer with a bicycle? Learn more about bicycle power in this HowStuffWorks podcast.

How Do Ballpoint Pens Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 21 Apr 2008 15:22:07 GMT

Ballpoint pens use a ball and socket tip to distribute thick ink at the perfect time. Learn more about ballpoint pens in this podcast from HowStuffWorks.

How Do Blue Screens Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 18 Apr 2008 15:21:07 GMT

Blue screen technology allows directors to superimpose false scenery behind real actors. Learn more about blue screens in this HowStuffWorks podcast.

How Does Making Bread Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 16 Apr 2008 15:20:07 GMT

Bread is a technology for turning hard kernels into a soft foodstuff. Learn more about bread and yeast in this HowStuffWorks podcast.

How Does Brain Freeze Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 11 Apr 2008 15:19:07 GMT

Brain freezes may be the result of a nerve center over the roof of the mouth. Learn more about brain freezes in this podcast from HowStuffWorks

How Do Black Lights Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 09 Apr 2008 15:18:07 GMT

Black light is a type of ultraviolet light bulb that affects phosphors. Learn more about black lights in this podcast from HowStuffWorks.

How Is Your Body Like An Engine?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 07 Apr 2008 15:17:07 GMT

If human muscles could use gasoline, they would get 900 miles to the galloon. Learn more about this comparison in this HowStuffWorks podcast.

How Do Afterburners Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 04 Apr 2008 15:16:07 GMT

Jet engine afterburners use kerosene to increase thrust by up to fifty percent. Learn more about afterburners in this podcast from HowStuffWorks.

How Does Anti Perspirant Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Mar 2008 15:24:07 GMT

Anti-perspirants use aluminum to prevent sweating. Learn more about anti-perspirants work in the HowStuffWorks podcast.

How Replantation Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 28 Mar 2008 15:33:07 GMT

If you were to see a person lose his or her limb, would you know what to do? Learn more about replantation and saving limbs in this HowStuffWorks podcast.

How Do Bug Zappers Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 26 Mar 2008 15:15:07 GMT

Bug zappers use electrified grids to kill bugs. Learn more about bug zappers and bugs in this HowStuffWorks podcast.

How Does The Back Of A One Dollar Bill Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 24 Mar 2008 15:14:07 GMT

Learn more about the pyramid, symbols, and phrases on the back of dollar bills in this podcast by HowStuffWorks.

How Does Decompression Sickness Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 21 Mar 2008 15:13:07 GMT

The bends, or decompression sickness, occurs when divers resurface too quickly. Learn more about the bends in this HowStuffWorks podcast.

How Do Bacteria Become Immune to Anti-biotics?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 19 Mar 2008 15:12:07 GMT

Bacteria can become immune to anti-antibiotics through mutation. Learn more about bacteria, mutation, and antibiotics in this HowStuffWorks podcast.

How Does Asylum Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 17 Mar 2008 15:11:07 GMT

People who apply for asylum in the US are either unwilling or unable to return to their country. Learn more about asylum in America with this HowStuffWorks podcast.

How Do Camels Store Water?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 14 Mar 2008 15:10:07 GMT

The camel's hump is a large deposit of fat that lets the camel survive up to 2 weeks without food. Learn more about camels in this HowStuffWorks podcast.

How Do Carbohydrates Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 12 Mar 2008 15:09:07 GMT

glucose, carbs, carbohydrates, sucrose, sugar, energy

What Does The CE Logo Mean?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 10 Mar 2008 15:08:07 GMT

The European Union uses the C. E. Logo to show a product conforms to European safety standards. Learn more about the C.E. Logo in this HowStuffWorks podcast.

How C4 Explosives Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 07 Mar 2008 16:07:07 GMT

Plastic explosives like C-4 are solid, stable, and very efficient. Learn more about c-4 in this HowStuffWorks podcast.

How Does The Human Life Span Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 05 Mar 2008 16:06:07 GMT

Reducing your caloric intake by 1/3 may extend your lifespan up to 40 percent. Learn more about the human lifespan in this podcast from HowStuffWorks.com

How Do Light Bulbs Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 03 Mar 2008 16:05:07 GMT

Light bulbs provide light by running electricity through a tungsten wire, increasing the filament temperature to 4,000 degrees. Learn more in this HowStuffWorks podcast.

How Internet Cookies Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 29 Feb 2008 16:05:01 GMT

Internet cookies are information stored as text strings on a machine by a web server. Most commonly, cookies are used to store user IDs.

Why Are National Contests Excluded in Rhode Island?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 27 Feb 2008 16:04:07 GMT

Rhode Island is the only state that requires a legal statement from companies conducting contests in the state. Learn more about contest laws in this HowStuffWorks podcast.

How Do DVD Players Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 25 Feb 2008 16:03:07 GMT

DVD players have several different audio-visual connections due to competing standards. Learn more about DVD player connections in this HowStuffWorks podcast.

How Does Dynamite Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 22 Feb 2008 16:02:07 GMT

Dynamite explodes because it contains its own oxygen and nitrogen atoms. Learn more about dynamite and explosions at HowStuffWorks.com

How Does Cotton Absorb Water?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 20 Feb 2008 16:01:07 GMT

Cotton can absorb about 20 times its weight in water, and 250 times more water than nylon. Learn more about cotton in this HowStuffWorks podcast.

How Do Cavities Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 18 Feb 2008 16:00:07 GMT

Cavities are formed by bacteria that excrete an acid onto the enamel of a tooth. Learn more about cavities and bacteria in this HowStuffWorks podcast.

How Do Ear Thermometers Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 18 Feb 2008 15:59:07 GMT

Ear Thermometers sense subtle infrared changes in light inside the eardrum. Learn more about ear thermometers, check out this HowStuffWorks podcast.

How Does Dry Cleaning Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 15 Feb 2008 15:58:07 GMT

Dry cleaning is not actually dry, but uses a solvent. Learn more about dry cleaning in this HowStuffWorks podcast.

How Do Counterfeit Pens Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 13 Feb 2008 15:57:07 GMT

Counterfeit pens contain an iodine solution that reacts with cellulose to create black stain. Learn more about counterfeit detecting pens in this HowStuffWorks podcast.

How Does Cork Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 13 Feb 2008 15:56:07 GMT

All trees have a cork layer, but only cork oak has a layer of cork thick enough to be useful. Learn more about cork and trees in this HowStuffWorks podcast.

Why Is Milk Good For Kids?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 11 Feb 2008 15:55:07 GMT

A human could eat mother's milk for up to two years. To learn more about milk, check out this HowStuffWorks podcast.

How Does Carrageenan Works?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 11 Feb 2008 15:54:07 GMT

Carrageenan is a seaweed extract used as a preservative in processed foods. Learn more about carrageenan, gums, and processed food in this podcast.

How Does A Jake Brake Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 08 Feb 2008 15:53:07 GMT

A Jake brake uses the engine to provide braking power by turning it into an air compressor. Learn more about Jake brakes in this HowStuffWorks podcast.

How Does Krispy Kreme Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 06 Feb 2008 15:52:07 GMT

A single Krispy Kreme store can produce 100,000 doughnuts a day. To learn more about how these Krispy Kreme doughnuts are made, check out this HowStuffWorks podcast.

How Do Computers Play Chess?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 04 Feb 2008 15:51:07 GMT

Computers and humans play chess in completely different ways. To learn more about how computers play chess, check out this HowStuffWorks podcast.

How Does Mars Food Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 01 Feb 2008 15:50:07 GMT

The typical male astronaut would need 1.25 pounds of dried food per day on a 2 year mission to mars. Learn more about mars in this HowStuffWorks podcast.

How Do Shots Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Thu, 31 Jan 2008 15:23:07 GMT

Most drugs travel through the bloodstream. If a drug molecule is too large, or dissolves in stomach acid, it must be given as a shot. Learn more about shots in this HowStuffWorks podcast.

How Do Credit Card Stripes Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 30 Jan 2008 15:49:07 GMT

Credit card strips are pieces of magnetic tape with your personal information. Learn more about credit card stripes at HowStuffWorks.com

How Do Diesel Subs Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 28 Jan 2008 15:48:07 GMT

Diesel submarines are the world's largest hybrid vehicles. Learn more about diesel engines in this HowStuffWorks podcast.

How Do Digital Cellphones Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 25 Jan 2008 15:47:07 GMT

Digital cellphones have better signal compression and more efficient batteries. Learn the difference between analog and digital cellphones in this HowStuffWorks podcast.

How Do Diets Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 23 Jan 2008 15:46:07 GMT

The human body is super-efficient, and burns 12 calories per pound per day. To learn more about dieting, calories, and exercise, check out this HowStuffWorks podcast.

How Does Espresso Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 21 Jan 2008 15:45:07 GMT

Espresso is made with finally-ground coffee beans, water, and lots of pressure. Learn more about espresso in this HowStuffWorks podcast.

How Do Lighted Watches Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 18 Jan 2008 15:44:07 GMT

Glowing watches use a thin layer of phosphor sandwiched between two clear electrodes to produce light. Learn more in this HowStuffWorks podcast.

How Does Charcoal Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 16 Jan 2008 15:43:07 GMT

Charcoal is made by heating wood without any oxygen to burn, creating smokeless carbon. Learn more about charcoal in this HowStuffWorks podcast.

How Do Dye Packs Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 14 Jan 2008 15:42:07 GMT

A dye pack is a stack of real bills with a dye pack stuck in the middle. Learn more about dye packs in this HowStuffWorks podcast.

How Is Corn Syrup Made?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 11 Jan 2008 15:41:07 GMT

Corn syrup is made by crushing corn starch and adding a special enzyme. To learn more about corn syrup, check out this HowStuffWorks podcast.

How Does Lead In TVs Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 09 Jan 2008 15:40:07 GMT

Most cities won't accept trashed monitors, because a monitor can contain up to 5 pounds of lead. Learn more about lead in this HowStuffWorks podcast.

Why Do Limbs Fall Asleep?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 07 Jan 2008 15:38:07 GMT

Pressure on nerves can cause the nerves to stop sending impulses to the brain, causing limbs to fall asleep. Learn more about limbs falling asleep in this HowStuffWorks podcast.

How Are Conjoined Twins Formed?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Fri, 04 Jan 2008 15:37:07 GMT

When two embryonic cell clumps split later than ten days after conception, conjoined twins may form. Learn more about conjoined twins in this HowStuffWorks podcast.

How Do Laser Speed Guns Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 02 Jan 2008 15:36:07 GMT

Laser speed guns shoot short bursts of laser-red infrared light to calculate the speed of a car. Learn more about laser speed guns in this HowStuffWorks podcast.

How Is Corn Oil Made?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:35:07 GMT

Corn kernels contain a small amount of oil in the germ, near the pointy end. Learn more about corn and corn oil in this HowStuffWorks podcast.

What Are Film Slates Used For?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:34:07 GMT

Film slates, or clapperboards, are used to synchronize sound and audio during filming. Learn more about clapperboards in this HowStuffWorks podcast.

How Do Deep Cycle Batteries Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:33:07 GMT

A deep-cycle battery provides a steady amount of current over a long amount of time. Learn more about deep-cycle batteries in this HowStuffWorks podcast.

How Do Microwaves Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:32:07 GMT

Microwaves heat food directly, while ovens heat the air around food. Learn more about microwaves in this HowStuffWorks podcast.

What Is A Nautical Mile?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:31:07 GMT

A nautical mile is based on the size of the earth. Learn more about nautical miles in this HowStuffWorks podcast.

How Does Night Vision Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:30:07 GMT

Night vision works in two ways: image enhancement and thermal imaging. Learn more about night vision in this HowStuffWorks podcast.

How Does Night Blindness Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:29:07 GMT

When your eyes are exposed to bright light, chemical breakdowns in your eyes produce night-blindness. Learn more in this podcast from HowStuffWorks.com

How Do Plasma TVs Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:28:07 GMT

Plasma TVs use millions of tiny lights, requiring less space than a conventional TV. Learn more about plasma TVs in this HowStuffWorks podcast.

How Do Passports Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:27:07 GMT

Keep yourself safe traveling abroad by making two copies of your ID and passport before leaving. Learn more about safe passport travel in this HowStuffWorks podcast.

How Does A Quartz Watch Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:26:07 GMT

In a quartz watch the time base is a tiny piece of quartz that reacts to voltage. Learn more about quartz watches in this HowStuffWorks podcast.

How Do Space Suits Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:25:07 GMT

Space suits provide oxygen, pressurize air, and control an astronaut's temperature. Learn more about space suits in this HowStuffWorks podcast.

How Does The Richter Scale Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:24:07 GMT

Earthquakes are measured using the Richter scale, a factor of ten scale. Learn more about the Richter Scale in this HowStuffWorks podcast.

How Do Pawn Shops Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:22:07 GMT

Pawn shops essentially make small loans based on collateral. Learn more about pawn shops in this HowStuffWorks podcast.

How Does Popcorn Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:21:07 GMT

When a kernel is softened with steam and pressurized, and when that pressure is suddenly released, popcorn puffs. Learn more about popcorn in this HowStuffWorks podcast.

How Do Sewers Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:20:07 GMT

Sewage treatment plants use several steps to purify and clean used water. Learn more about sewage treatment plants in this HowStuffWorks podcast.

How Does Remote Entry Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:19:07 GMT

Remote entry fobs are tiny radio transmitters that use a rolling code to open vehicles. Learn more about remote entry in this HowStuffWorks podcast.

How Does Oil Weight Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:18:07 GMT

Oil weight is a measure of viscosity, and weight can change depending on temperature. Learn more about motor oil weight in this HowStuffWorks podcast.

How Does A Pet ID Chip Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:17:07 GMT

Pet ID chips use a radio transmitter to broadcast a unique ID number. Learn more about pet ID chips in this HowStuffWorks podcast.

How Do Rebreathers Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:16:07 GMT

Rebreathers use the same air over and over, adding oxygen and removing carbon dioxide. Learn more a bout rebreathers in this HowStuffWorks podcast.

How Do Red Light Cameras Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:15:07 GMT

Red-light cameras use triggers, cameras, and a computer to monitor traffic violations. Learn more about red-light cameras in this HowStuffWorks podcast.

How Does The Nobel Prize Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 15:14:07 GMT

Named after the inventor of dynamite, the Nobel prize is one of the world's most prestigious rewards. Learn more about the Nobel Prize in this HowStuffWorks podcast.

How Windchill Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Mon, 31 Dec 2007 14:12:07 GMT

The wind-chill factor is the temperature that a person feels because of the wind. This is the same effect found when a person blows on hot soup to cool it down.

How Does An Oxygen Sensor Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:13:07 GMT

An oxygen sensor measures how much oxygen is in the car exhaust. Learn more about oxygen sensors in this HowStuffWorks podcast.

How Is A Phone Powered

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:12:07 GMT

Phone companies maintain generators and battery banks to make sure house phones work during emergencies. Learn more in this HowStuffWorks podcast.

How Do Retention Ponds Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:11:07 GMT

Retention ponds catch all the water that runs off a parking lot during a heavy rain. Learn more about retention ponds in this HowStuffWorks podcast.

How Do Onions Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:10:07 GMT

Slicing onions causes people's eyes to tear up in response to the acids produced during slicing. Learn more about onions and tears in this HowStuffWorks podcast.

How Does An Optical Mouse Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:09:07 GMT

An optical mouse uses a fast camera and computer to calculate where you've moved the mouse. Learn more about optical mice in this HowStuffWorks podcast.

How Does Finding New Planets Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:08:07 GMT

Planets outside our solar system were not discovered until 1991. Learn more about discovering extrasolar planets in this HowStuffWorks podcast.

How Does a Safety Chute Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:07:07 GMT

Safety chutes deploy automatically when the primary parachute fails. Learn more about safety chutes in this HowStuffWorks podcast.

How Is the Sea Level Measured?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:06:07 GMT

The sea level can be read relatively accurately using a tide gauge. Learn more about measuring sea levels in this HowStuffWorks podcast.

Why Do We Hear The Ocean In A Seashell?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:05:07 GMT

Seashells reflect ambient sound like a resonating chamber. To learn more about resonating seashells, check out this HowStuffWorks podcast.

How Do Parasitic Loads Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:04:07 GMT

Parasitic loads use electricity even when they're unplugged. Learn more about parasitic loads in this HowStuffWorks podcast.

How Do T1 Lines Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:03:07 GMT

A t1 line can carry digital data at a rate of 1.5 million bits per second. Learn more about t1 lines in this HowStuffWorks podcast.

How Does A Toaster Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:02:07 GMT

Toaster coils are made with nichrome wire, which does not rust during heating. Learn more about toasters in this HowStuffWorks podcast.

How Do Sunglasses Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:01:07 GMT

Good sunglasses have several different technologies at work. In this HowStuffWorks podcast, you'll learn more about sunglasses, polarization, and tint.

How Do Trees Function During Droughts?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 15:00:07 GMT

Trees survive drought by absorbing water from the soil. Learn more about trees during drought in this HowStuffWorks podcast.

How Dialysis Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:58:07 GMT

The kidneys remove urea and certain salts from the blood so that these wastes can exit the body in urine. Dialysis machines mimic this behavior, and allow people with chronic kidney problems to survive. Learn more about dialysis in this HowStuffWorks podc

How Does Water Weight Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:57:07 GMT

The amount of water carried in a human body can affect weight. Learn more about how water affects weight fluctuation in this HowStuffWorks podcast.

How Buying an HDTV Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:56:07 GMT

When buying a high-definition television, consumers should carefully consider the technical specifications of each product. Learn more about buying an HDTV in this HowStuffWorks podcast.

How Do Video Guns Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:55:07 GMT

Video guns use a light sensor to sense where the game player is firing. Learn more about light sensors in this HowStuffWorks podcast.

How Dump Trucks Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:54:07 GMT

Some dump trucks carry extra sets of adjustable tires, which are raised or lowered depending on the weight of the load. Learn more about dump trucks and adjustable tire sets in this HowStuffWorks podcast.

How Does Tear Gas Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:53:07 GMT

Tear gas irritates mucous membranes in the eyes, nose, mouth, and lungs. Learn more about tear gas in this HowStuffWorks podcast.

How Automatic Rice Cookers Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:52:07 GMT

As soon as all the water in a rice cooker is absorbed, it turns itself off -- but how? Learn more about automatic rice cookers in this HowStuffWorks podcast.

How Does A Surge Protector Work?

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:51:07 GMT

Surge protectors safeguard electronics by using a MOV to shunt the voltage to ground. Learn more about surge protectors in this HowStuffWorks podcast.

How Gym Fees Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:50:07 GMT

Studies prove the typical person is more likely to save money by paying each time he or she visits the gym, rather than buying a membership. Learn more about gym fees and memberships in this HowStuffWorks podcast.

How Rearview Mirrors Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:49:07 GMT

How can the same piece of glass have two different amounts of reflection? Learn more about rearview mirrors in this HowStuffWorks podcast.

How FM Radio Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:48:07 GMT

Why do all FM radio stations in the United States end in an odd number? The answer is found in the FCC frequency band regulation. Learn more about FM radio and the FCC in this HowStuffWorks podcast.

How Barometers Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:47:07 GMT

A barometer measures air pressure, and indicates changes in pressure by rising or falling. Learn more about air pressure and barometers in this HowStuffWorks podcast.

How Calorie Meters Work

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:46:07 GMT

It's easy to jump on an exercise machine and watch the calorie meter -- but how accurate are these meters? Learn more about calorie meters in this HowStuffWorks podcast

How Drinking Sea Water Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:45:07 GMT

Most people know drinking large amounts of salt water is harmful, but how exactly does salt water dehydrate the body? Learn more about drinking salt water in this HowStuffWorks podcast.

How Airplane Cabin Pressure Works

mbrain@howstuffworks.com (Marshall Brain, HowStuffWorks.com) — Wed, 31 Jan 2007 14:44:07 GMT

Although it's easy to take the pressure in an airplane cabin for granted, passengers rely on highly-pressurized air for comfort and survival. Learn more about airplane cabin pressure in this HowStuffWorks podcast.