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<title>Physics Today magazine</title>
<link>http://www.physicstoday.org/?type=RSS</link>
<description>The magazine for the physics community</description>

<language>en-US</language>
<copyright>American Institute of Physics 2012</copyright>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<lastBuildDate>Tue, 01 Dec 2009 08:00:00 EST</lastBuildDate>

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<title>Chaos at fifty</title>
<description>In 1963 an MIT meteorologist revealed deterministic predictability to be an illusion and gave birth to a field that still thrives.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=8eKlhZmI0gc:ssBTLQFbh0w:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=8eKlhZmI0gc:ssBTLQFbh0w:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=8eKlhZmI0gc:ssBTLQFbh0w:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=8eKlhZmI0gc:ssBTLQFbh0w:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=8eKlhZmI0gc:ssBTLQFbh0w:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=8eKlhZmI0gc:ssBTLQFbh0w:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=8eKlhZmI0gc:ssBTLQFbh0w:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=8eKlhZmI0gc:ssBTLQFbh0w:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=8eKlhZmI0gc:ssBTLQFbh0w:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/8eKlhZmI0gc" height="1" width="1"/&gt;</description>
<category domain="author">Adilson E. Motter</category>
<category domain="author">David K. Campbell</category>
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<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/8eKlhZmI0gc/p27_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p27_s1</feedburner:origLink></item>

<item>
<title>Niels Bohr between physics and chemistry</title>
<description>Bohr’s atomic theory was addressed as much to chemical problems as to physical ones. But the great scientist’s intent to establish a new framework for atomic and molecular chemistry was less successful, and was unacknowledged by most chemists.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=eaT69-vsv1o:t2Qn_xt0DJc:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=eaT69-vsv1o:t2Qn_xt0DJc:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=eaT69-vsv1o:t2Qn_xt0DJc:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=eaT69-vsv1o:t2Qn_xt0DJc:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=eaT69-vsv1o:t2Qn_xt0DJc:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=eaT69-vsv1o:t2Qn_xt0DJc:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=eaT69-vsv1o:t2Qn_xt0DJc:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=eaT69-vsv1o:t2Qn_xt0DJc:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=eaT69-vsv1o:t2Qn_xt0DJc:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/eaT69-vsv1o" height="1" width="1"/&gt;</description>
<category domain="author">Helge Kragh</category>
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<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/eaT69-vsv1o/p36_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p36_s1</feedburner:origLink></item>

<item>
<title>Getting a grip on the electrical grid</title>
<description>As our electrical grid systems become smarter and more autonomous, they require greater control technologies to protect them from failing.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=hIb0D4aD89g:oGtiFYAJ2OY:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=hIb0D4aD89g:oGtiFYAJ2OY:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=hIb0D4aD89g:oGtiFYAJ2OY:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=hIb0D4aD89g:oGtiFYAJ2OY:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=hIb0D4aD89g:oGtiFYAJ2OY:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=hIb0D4aD89g:oGtiFYAJ2OY:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=hIb0D4aD89g:oGtiFYAJ2OY:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=hIb0D4aD89g:oGtiFYAJ2OY:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=hIb0D4aD89g:oGtiFYAJ2OY:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/hIb0D4aD89g" height="1" width="1"/&gt;</description>
<category domain="author">Scott Backhaus</category>
<category domain="author">Michael Chertkov</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1979</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/hIb0D4aD89g/p42_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p42_s1</feedburner:origLink></item>

<item>
<title>Graphene yields evidence of atomic collapse</title>
<description>A relativistic phenomenon predicted for highly charged nuclei has been seen in a tabletop experiment.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=T2r5S_Nz5Uk:DH-vlXTqHRM:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=T2r5S_Nz5Uk:DH-vlXTqHRM:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=T2r5S_Nz5Uk:DH-vlXTqHRM:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=T2r5S_Nz5Uk:DH-vlXTqHRM:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=T2r5S_Nz5Uk:DH-vlXTqHRM:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=T2r5S_Nz5Uk:DH-vlXTqHRM:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=T2r5S_Nz5Uk:DH-vlXTqHRM:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=T2r5S_Nz5Uk:DH-vlXTqHRM:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=T2r5S_Nz5Uk:DH-vlXTqHRM:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/T2r5S_Nz5Uk" height="1" width="1"/&gt;</description>
<category domain="author">Ashley G. Smart</category>
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<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/T2r5S_Nz5Uk/p12_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p12_s1</feedburner:origLink></item>

<item>
<title>Gigantic IceCube tightens limits on theories that predict dark-matter particles</title>
<description>The more one looks for WIMPs without finding them, the greater are the constraints on supersymmetric extensions of standard particle theory.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=-FHt52srqKo:rzEZlYvwepE:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=-FHt52srqKo:rzEZlYvwepE:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=-FHt52srqKo:rzEZlYvwepE:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=-FHt52srqKo:rzEZlYvwepE:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=-FHt52srqKo:rzEZlYvwepE:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=-FHt52srqKo:rzEZlYvwepE:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=-FHt52srqKo:rzEZlYvwepE:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=-FHt52srqKo:rzEZlYvwepE:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=-FHt52srqKo:rzEZlYvwepE:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/-FHt52srqKo" height="1" width="1"/&gt;</description>
<category domain="author">Bertram M. Schwarzschild</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1966</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/-FHt52srqKo/p14_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p14_s1</feedburner:origLink></item>

<item>
<title>Birds can recognize a model’s reproduction of their own songs</title>
<description>An interdisciplinary collaboration integrates physical, acoustic, and biological approaches to the study of birdsong.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=YYJIl-WKyv0:vYu6zMsMey8:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=YYJIl-WKyv0:vYu6zMsMey8:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=YYJIl-WKyv0:vYu6zMsMey8:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=YYJIl-WKyv0:vYu6zMsMey8:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=YYJIl-WKyv0:vYu6zMsMey8:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=YYJIl-WKyv0:vYu6zMsMey8:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=YYJIl-WKyv0:vYu6zMsMey8:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=YYJIl-WKyv0:vYu6zMsMey8:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=YYJIl-WKyv0:vYu6zMsMey8:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/YYJIl-WKyv0" height="1" width="1"/&gt;</description>
<category domain="author">Johanna L. Miller</category>
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<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/YYJIl-WKyv0/p16_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p16_s1</feedburner:origLink></item>

<item>
<title>A seismometer in orbit</title>
<category domain="author">R. Mark Wilson</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1968</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/vySlQXIOeWQ/p18_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<description>&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=vySlQXIOeWQ:6ugAu3mDL_w:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=vySlQXIOeWQ:6ugAu3mDL_w:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=vySlQXIOeWQ:6ugAu3mDL_w:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=vySlQXIOeWQ:6ugAu3mDL_w:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=vySlQXIOeWQ:6ugAu3mDL_w:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=vySlQXIOeWQ:6ugAu3mDL_w:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=vySlQXIOeWQ:6ugAu3mDL_w:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=vySlQXIOeWQ:6ugAu3mDL_w:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=vySlQXIOeWQ:6ugAu3mDL_w:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/vySlQXIOeWQ" height="1" width="1"/&gt;</description><feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p18_s1</feedburner:origLink></item>

<item>
<title>Mesoporous crystals</title>
<category domain="author">Richard J. Fitzgerald</category>
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<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/injeaz5MwqY/p18_s2</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<description>&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=injeaz5MwqY:oGAL6On2AqY:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=injeaz5MwqY:oGAL6On2AqY:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=injeaz5MwqY:oGAL6On2AqY:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=injeaz5MwqY:oGAL6On2AqY:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=injeaz5MwqY:oGAL6On2AqY:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=injeaz5MwqY:oGAL6On2AqY:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=injeaz5MwqY:oGAL6On2AqY:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=injeaz5MwqY:oGAL6On2AqY:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=injeaz5MwqY:oGAL6On2AqY:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/injeaz5MwqY" height="1" width="1"/&gt;</description><feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p18_s2</feedburner:origLink></item>

<item>
<title>A vortex knot caught on camera</title>
<category domain="author">Ashley G. Smart</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1970</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/CyFfRTCwC84/p18_s3</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<description>&lt;div class="feedflare"&gt;
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<item>
<title>When dust slams into spacecraft</title>
<category domain="author">Charles Day</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1971</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/JWGaN76cFIQ/p18_s4</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<description>&lt;div class="feedflare"&gt;
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<item>
<title>West Coast national labs trying to cope with roller-coaster budget picture</title>
<description>Complying with sequestration will entail pay cuts and stalled construction projects and will halt new research programs.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=4HMI2EL0Kl8:gCLvEOvelSU:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=4HMI2EL0Kl8:gCLvEOvelSU:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=4HMI2EL0Kl8:gCLvEOvelSU:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=4HMI2EL0Kl8:gCLvEOvelSU:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=4HMI2EL0Kl8:gCLvEOvelSU:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=4HMI2EL0Kl8:gCLvEOvelSU:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=4HMI2EL0Kl8:gCLvEOvelSU:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=4HMI2EL0Kl8:gCLvEOvelSU:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=4HMI2EL0Kl8:gCLvEOvelSU:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/4HMI2EL0Kl8" height="1" width="1"/&gt;</description>
<category domain="author">David Kramer</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1972</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/4HMI2EL0Kl8/p19_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p19_s1</feedburner:origLink></item>

<item>
<title>China prepares to spend billions on science and technology</title>
<description>With its strong economy, the country wants to play a bigger role on the world science stage.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=P4BvyJNKyUs:wa53wNHrvaQ:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=P4BvyJNKyUs:wa53wNHrvaQ:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=P4BvyJNKyUs:wa53wNHrvaQ:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=P4BvyJNKyUs:wa53wNHrvaQ:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=P4BvyJNKyUs:wa53wNHrvaQ:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=P4BvyJNKyUs:wa53wNHrvaQ:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=P4BvyJNKyUs:wa53wNHrvaQ:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=P4BvyJNKyUs:wa53wNHrvaQ:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=P4BvyJNKyUs:wa53wNHrvaQ:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/P4BvyJNKyUs" height="1" width="1"/&gt;</description>
<category domain="author">Toni Feder</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1973</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/P4BvyJNKyUs/p20_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p20_s1</feedburner:origLink></item>

<item>
<title>Carbon capture may be a ways off, but ARPA–E is working on it</title>
<description>Several technologies are aimed at minimizing the cost of removing CO2 during coal burning. But their deployment will require subsidies or a price on carbon emissions.&lt;div class="feedflare"&gt;
&lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=D--B27k8WXA:8l5t_ZDrEyI:yIl2AUoC8zA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=yIl2AUoC8zA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=D--B27k8WXA:8l5t_ZDrEyI:F7zBnMyn0Lo"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=D--B27k8WXA:8l5t_ZDrEyI:F7zBnMyn0Lo" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=D--B27k8WXA:8l5t_ZDrEyI:7Q72WNTAKBA"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=7Q72WNTAKBA" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=D--B27k8WXA:8l5t_ZDrEyI:V_sGLiPBpWU"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=D--B27k8WXA:8l5t_ZDrEyI:V_sGLiPBpWU" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=D--B27k8WXA:8l5t_ZDrEyI:qj6IDK7rITs"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?d=qj6IDK7rITs" border="0"&gt;&lt;/img&gt;&lt;/a&gt; &lt;a href="http://feeds.feedburner.com/~ff/physicstoday/pt1?a=D--B27k8WXA:8l5t_ZDrEyI:gIN9vFwOqvQ"&gt;&lt;img src="http://feeds.feedburner.com/~ff/physicstoday/pt1?i=D--B27k8WXA:8l5t_ZDrEyI:gIN9vFwOqvQ" border="0"&gt;&lt;/img&gt;&lt;/a&gt;
&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/D--B27k8WXA" height="1" width="1"/&gt;</description>
<category domain="author">David Kramer</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1974</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/D--B27k8WXA/p23_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p23_s1</feedburner:origLink></item>

<item>
<title>GROWing abroad</title>
<category domain="author">Toni Feder</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1975</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/Lrd3ZGA7Mxs/p25_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<description>&lt;div class="feedflare"&gt;
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<item>
<title>Bassi–Veratti archives online</title>
<category domain="author">Toni Feder</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1976</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/G9EhFwxwOKw/p26_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Rewards and risks for physicist entrepreneurs</title>
<category domain="author">Peter Foukal</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1960</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/6bgyCJd12-Q/p8_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Rewards and risks for physicist entrepreneurs</title>
<category domain="author">Orville R. Butler</category>
<category domain="author">R. Joseph Anderson</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1961</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/VZzGA9Bk3wg/p8_s2</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Beyond the classical view of atoms</title>
<category domain="author">David L. Rosen</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1962</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/0jAjZKJocFg/p9_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Beyond the classical view of atoms</title>
<category domain="author">Chuck Gallo</category>
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<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/O20uQXiniNQ/p10_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<title>An early start for superfluid applications in geodesy</title>
<category domain="author">William E. Carter</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1964</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/evpxv8Oo6MU/p10_s2</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Fundamentals of Condensed Matter and Crystalline Physics: An Introduction for Students of Physics and Materials Science</title>
<category domain="author">David L. Sidebottom</category>
<category domain="author">Reviewed by Ivan Smalyukh</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1980</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/8q7PnXvUzdk/p49_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Atoms in Intense Laser Fields</title>
<category domain="author">C. J. Joachain</category>
<category domain="author">N. J. Kylstra</category>
<category domain="author">R. M. Potvliege</category>
<category domain="author">Reviewed by Philip H. Bucksbaum</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1981</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/ITJNoSec-Bk/p49_s2</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>An Introduction to Celestial Mechanics</title>
<category domain="author">Richard Fitzpatrick</category>
<category domain="author">Reviewed by Arlin Crotts</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1982</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/zk0lG90boDE/p50_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>String Theory and Particle Physics: An Introduction to String Phenomenology</title>
<category domain="author">Luis E. Ibáñez</category>
<category domain="author">Angel M. Uranga</category>
<category domain="author">Reviewed by Senarath P. de Alwis</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1983</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/LMSMIZVy83M/p51_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>New books</title>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1984</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/3LFILm3CbOg/p52_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Focus on lasers and imaging</title>
<category domain="author">Andreas Mandelis</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1985</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/BrNhpasjDLo/p54_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>Alfred Kenneth Mann</title>
<category domain="author">Eugene W. Beier</category>
<category domain="author">Hugh H. Williams</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1986</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/VIvAXZiEp7o/p59_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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<item>
<title>The care and feeding of an Antarctic telescope</title>
<description>Antarctica’s Dome A region is an excellent site for housing telescopes that look at terahertz radiation. But getting the telescopes down to the continent and maintaining them once they’re in place is a challenge.&lt;div class="feedflare"&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/physicstoday/pt1/~4/dujloDmbnS8" height="1" width="1"/&gt;</description>
<category domain="author">Michael C. B. Ashley</category>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1987</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/dujloDmbnS8/p60_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
<feedburner:origLink>http://www.physicstoday.org/resource/1/phtoad/v66/i5/p60_s1</feedburner:origLink></item>

<item>
<title>Separating stem cells by shear force</title>
<guid isPermaLink="false">http://link.aip.org/link/doi/10.1063/PT.3.1988</guid>
<link>http://feedproxy.google.com/~r/physicstoday/pt1/~3/5fuSIujpSGA/p68_s1</link>
<pubDate>Wed, 01 May 2013 08:00:00 EST</pubDate>
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