BrainStuff

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.