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<channel>
	<title>The Why Files</title>
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	<link>http://whyfiles.org</link>
	<description>The Science Behind The News</description>
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		<item>
		<title>What is spring and when does it occur?</title>
		<link>http://whyfiles.org/2010/what-is-spring-and-when-does-it-occur/</link>
		<comments>http://whyfiles.org/2010/what-is-spring-and-when-does-it-occur/#comments</comments>
		<pubDate>Sat, 20 Mar 2010 14:00:17 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Weather Guys]]></category>
		<category><![CDATA[March]]></category>
		<category><![CDATA[spring]]></category>
		<category><![CDATA[vernal equinox]]></category>

		<guid isPermaLink="false">http://whyfiles.org/2010/what-is-spring-and-when-does-it-occur/</guid>
		<description><![CDATA[What is spring and when does it occur?
According to the astronomical definition, spring occurs when the Sun’s rays strike the equator at noon from directly overhead. This particular time varies from year to year due to variations in the Earth’s orbit about the Sun. In the Northern Hemisphere the vernal (or spring) equinox (equi, “equal,” [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Holy horseradish! Ancient roots of pain</title>
		<link>http://whyfiles.org/2010/holy-horseradish-ancient-roots-of-pain/</link>
		<comments>http://whyfiles.org/2010/holy-horseradish-ancient-roots-of-pain/#comments</comments>
		<pubDate>Thu, 18 Mar 2010 12:51:25 +0000</pubDate>
		<dc:creator>svmedaristwf</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Bio brainstorms]]></category>
		<category><![CDATA[Biological Evolution]]></category>
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		<category><![CDATA[Wacky science]]></category>
		<category><![CDATA[caffeine]]></category>
		<category><![CDATA[chemical receptor]]></category>
		<category><![CDATA[evolution]]></category>
		<category><![CDATA[fruitfly]]></category>
		<category><![CDATA[genetics]]></category>
		<category><![CDATA[invertebrate]]></category>
		<category><![CDATA[pain]]></category>
		<category><![CDATA[taste sensation]]></category>
		<category><![CDATA[toxic chemicals]]></category>
		<category><![CDATA[TRPA1]]></category>
		<category><![CDATA[vertebrate]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=5745</guid>
		<description><![CDATA[Horseradish, onions and caffeine all activate a group of chemical receptors that can trigger a pain signal. Turns out the same receptors exist in fruitflies, mussels, corals and mule deer. Why has this receptor survived a half-billion years? Because it protects against toxic chemicals - even if they taste good in small doses!]]></description>
		<wfw:commentRss>http://whyfiles.org/2010/holy-horseradish-ancient-roots-of-pain/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Can there be a sun-snowshower?</title>
		<link>http://whyfiles.org/2010/can-there-be-a-sun-snowshower/</link>
		<comments>http://whyfiles.org/2010/can-there-be-a-sun-snowshower/#comments</comments>
		<pubDate>Mon, 15 Mar 2010 14:00:32 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Weather Guys]]></category>
		<category><![CDATA[cumulus]]></category>
		<category><![CDATA[sun]]></category>
		<category><![CDATA[sun shower]]></category>
		<category><![CDATA[sun-snowshower]]></category>

		<guid isPermaLink="false">http://whyfiles.org/2010/can-there-be-a-sun-snowshower/</guid>
		<description><![CDATA[Can there be a sun-snowshower?

Photo: Zaphod
These cumulus clouds are not sunshower material. See a late spring sun-snow shower here!

Almost all of us have noticed a summer rainshower that occurs while the sun is shining on us.  In this event, known as a sun-shower, the raindrops fall from a type of cloud called a cumulus [...]]]></description>
		<wfw:commentRss>http://whyfiles.org/2010/can-there-be-a-sun-snowshower/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Video surveillance: Who is watching you?</title>
		<link>http://whyfiles.org/2010/video-surveillance-who-is-watching-you/</link>
		<comments>http://whyfiles.org/2010/video-surveillance-who-is-watching-you/#comments</comments>
		<pubDate>Thu, 11 Mar 2010 20:22:03 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Abilities of technological design]]></category>
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		<category><![CDATA[James Davis]]></category>
		<category><![CDATA[Jay Stanley]]></category>
		<category><![CDATA[Lee Tien]]></category>
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		<category><![CDATA[Mark Andrejevic]]></category>
		<category><![CDATA[privacy]]></category>
		<category><![CDATA[Ring of steel]]></category>
		<category><![CDATA[school surveillance]]></category>
		<category><![CDATA[smart surveillance]]></category>
		<category><![CDATA[spying]]></category>
		<category><![CDATA[Torin Monahan]]></category>
		<category><![CDATA[video surveillance]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=5621</guid>
		<description><![CDATA[London pioneered video surveillance in public, but it's catching on fast. Many major cities have systems, and more are coming. What do these cameras learn? How do they interact with other sources of data? In this culture of disclosure should we even worry about privacy?]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Pahoehoe lava flow</title>
		<link>http://whyfiles.org/2010/pahoehoe-lava-flow/</link>
		<comments>http://whyfiles.org/2010/pahoehoe-lava-flow/#comments</comments>
		<pubDate>Tue, 09 Mar 2010 15:36:35 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cool Science Images]]></category>
		<category><![CDATA[core]]></category>
		<category><![CDATA[crust]]></category>
		<category><![CDATA[Earth]]></category>
		<category><![CDATA[Hawaii]]></category>
		<category><![CDATA[lava flow]]></category>
		<category><![CDATA[mantle]]></category>
		<category><![CDATA[pahoehoe]]></category>
		<category><![CDATA[volcanic]]></category>
		<category><![CDATA[volcano]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=5542</guid>
		<description><![CDATA[Hawaii is well known to have been created from volcanic activity, and the geologic hotspot below the islands is the most studied in the world.]]></description>
		<wfw:commentRss>http://whyfiles.org/2010/pahoehoe-lava-flow/feed/</wfw:commentRss>
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		</item>
		<item>
		<title>Why does snow sometimes sparkle?</title>
		<link>http://whyfiles.org/2010/why-does-snow-sometimes-sparkle/</link>
		<comments>http://whyfiles.org/2010/why-does-snow-sometimes-sparkle/#comments</comments>
		<pubDate>Mon, 08 Mar 2010 14:30:04 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Weather Guys]]></category>
		<category><![CDATA[snow]]></category>
		<category><![CDATA[snow crystal]]></category>
		<category><![CDATA[snowflakes]]></category>
		<category><![CDATA[sparkle]]></category>

		<guid isPermaLink="false">http://whyfiles.org/2010/why-does-snow-sometimes-sparkle/</guid>
		<description><![CDATA[Why does snow sometimes sparkle?


Photo of snow in west Sierra Nevada by Itrovert

Sometimes on a sunny day, freshly fallen snow may appear to sparkle or glitter. This happens because when light hits an object light, it can be absorbed, in which case the object is heated; transmitted, in which case light passes through the object; [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Studying survival on a sinking ship</title>
		<link>http://whyfiles.org/2010/studying-survival-on-a-sinking-ship/</link>
		<comments>http://whyfiles.org/2010/studying-survival-on-a-sinking-ship/#comments</comments>
		<pubDate>Thu, 04 Mar 2010 21:54:49 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Human Behavior]]></category>
		<category><![CDATA[Natural and human-induced hazards]]></category>
		<category><![CDATA[Science and technology in society]]></category>
		<category><![CDATA[Science in Personal and Social Perspectives]]></category>
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		<category><![CDATA[lifeboat]]></category>
		<category><![CDATA[Lusitania]]></category>
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		<category><![CDATA[Sinking]]></category>
		<category><![CDATA[social psychology]]></category>
		<category><![CDATA[submarine]]></category>
		<category><![CDATA[Titanic]]></category>
		<category><![CDATA[women and children first]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=5425</guid>
		<description><![CDATA[The Titanic sank in 1912, the Lusitania sank in 1915. In each case, about 32 percent of passengers survived. But women and children did much better on Titanic, which took 160 minutes to slide underwater, than on Lusitania, which went down in 18 minutes. Ditto for rich people. Why?]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Why does snow squeak when you walk on it?</title>
		<link>http://whyfiles.org/2010/why-does-snow-squeak-when-you-walk-on-it/</link>
		<comments>http://whyfiles.org/2010/why-does-snow-squeak-when-you-walk-on-it/#comments</comments>
		<pubDate>Mon, 01 Mar 2010 10:30:45 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Weather Guys]]></category>
		<category><![CDATA[ice crystal]]></category>
		<category><![CDATA[ice grain]]></category>
		<category><![CDATA[snow squeak]]></category>
		<category><![CDATA[snowpack]]></category>

		<guid isPermaLink="false">http://whyfiles.org/2010/why-does-snow-squeak-when-you-walk-on-it/</guid>
		<description><![CDATA[Snow can make both ‘squeaky’ and ‘crunchy’ sounds. Snow is a mixture of ice crystals, liquid water and air, and the sound it makes when you walk on it depends on the proportions of this mixture.]]></description>
		<wfw:commentRss>http://whyfiles.org/2010/why-does-snow-squeak-when-you-walk-on-it/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Poverty: Changing the body, changing the brain</title>
		<link>http://whyfiles.org/2010/poverty-changing-the-body-changing-the-brain/</link>
		<comments>http://whyfiles.org/2010/poverty-changing-the-body-changing-the-brain/#comments</comments>
		<pubDate>Fri, 26 Feb 2010 01:24:17 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Understanding about scientific inquiry]]></category>
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		<category><![CDATA[Curt Sandman]]></category>
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		<category><![CDATA[Greg Duncan]]></category>
		<category><![CDATA[Jack Shonkoff]]></category>
		<category><![CDATA[Katherine Magnuson]]></category>
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		<category><![CDATA[learning]]></category>
		<category><![CDATA[Nathan Fox]]></category>
		<category><![CDATA[poverty]]></category>
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		<category><![CDATA[stress]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=5129</guid>
		<description><![CDATA[Neglect, stress and abuse are all more common among the poor. New studies show that these factors can cause long-term changes in learning, brains and behavior, and suggest how to prevent damage in the vulnerable years. Could treating depressed mothers promote healthy interactions with their kids?]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>In detail: How learning changes brain</title>
		<link>http://whyfiles.org/2010/in-detail-how-learning-changes-brain/</link>
		<comments>http://whyfiles.org/2010/in-detail-how-learning-changes-brain/#comments</comments>
		<pubDate>Thu, 18 Feb 2010 20:51:31 +0000</pubDate>
		<dc:creator>svmedaristwf</dc:creator>
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		<category><![CDATA[The cell]]></category>
		<category><![CDATA[behavior]]></category>
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		<guid isPermaLink="false">http://whyfiles.org/?p=4650</guid>
		<description><![CDATA[Changes in the junctions between nerve cells determine how well a bird will learn to sing. Regular change in these junctions helps the bird remember the song of its species, which it needs to learn to reproduce that song. Study could explain why older people have such trouble learning a new language.]]></description>
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