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	<title>The Why Files &#187; Biology</title>
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	<link>http://whyfiles.org</link>
	<description>The Science Behind The News</description>
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		<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>
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		<category><![CDATA[Structure and function in living systems]]></category>
		<category><![CDATA[This Week]]></category>
		<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>
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		</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>
		<category><![CDATA[brain]]></category>
		<category><![CDATA[computer]]></category>
		<category><![CDATA[regulation]]></category>

		<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>
		<wfw:commentRss>http://whyfiles.org/2010/in-detail-how-learning-changes-brain/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Tracking traveling toads</title>
		<link>http://whyfiles.org/2010/tracking-traveling-toads/</link>
		<comments>http://whyfiles.org/2010/tracking-traveling-toads/#comments</comments>
		<pubDate>Thu, 04 Feb 2010 21:42:54 +0000</pubDate>
		<dc:creator>svmedaristwf</dc:creator>
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		<category><![CDATA[Reproduction and heredity]]></category>
		<category><![CDATA[Science as Inquiry]]></category>
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		<category><![CDATA[adaptive radiation]]></category>
		<category><![CDATA[Australia]]></category>
		<category><![CDATA[bufo]]></category>
		<category><![CDATA[bufonidae]]></category>
		<category><![CDATA[cane toad]]></category>
		<category><![CDATA[colonization]]></category>
		<category><![CDATA[speciation]]></category>
		<category><![CDATA[toad]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=4351</guid>
		<description><![CDATA[Do new species arise because so many niches are available in a new habitat? Or do they arise because newcomers have multiple talents for survival? A new study points to traits that enable success in the new location.]]></description>
		<wfw:commentRss>http://whyfiles.org/2010/tracking-traveling-toads/feed/</wfw:commentRss>
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		<item>
		<title>Sustaining symbiosis &#8211; new clues</title>
		<link>http://whyfiles.org/2010/sustaining-symbiosis-new-clues/</link>
		<comments>http://whyfiles.org/2010/sustaining-symbiosis-new-clues/#comments</comments>
		<pubDate>Thu, 21 Jan 2010 21:02:26 +0000</pubDate>
		<dc:creator>svmedaristwf</dc:creator>
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		<category><![CDATA[Margaret McFall-Ngai]]></category>
		<category><![CDATA[regulation]]></category>
		<category><![CDATA[symbiont]]></category>
		<category><![CDATA[symbiosis]]></category>
		<category><![CDATA[University Of Wisconsin Madison]]></category>
		<category><![CDATA[Vibrio fischeri]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=4183</guid>
		<description><![CDATA[To hide from hungry fish, this animal houses luminous bacteria. But what prevents the bacteria from reproducing and killing the squid? At last, a genetic a balancing mechanism is revealed.]]></description>
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		<title>Fish phishing attack explained!</title>
		<link>http://whyfiles.org/2010/fish-phishing-attack-explained/</link>
		<comments>http://whyfiles.org/2010/fish-phishing-attack-explained/#comments</comments>
		<pubDate>Thu, 07 Jan 2010 21:24:26 +0000</pubDate>
		<dc:creator>svmedaristwf</dc:creator>
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		<category><![CDATA[Behavior of organisms]]></category>
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		<category><![CDATA[Diversity and adaptations of organisms]]></category>
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		<category><![CDATA[Understanding about scientific inquiry]]></category>
		<category><![CDATA[blue-streaked wrasse]]></category>
		<category><![CDATA[Cleaner fish]]></category>
		<category><![CDATA[evolution of behavior]]></category>
		<category><![CDATA[evolution of cooperation]]></category>
		<category><![CDATA[Labroides dimidiatus]]></category>
		<category><![CDATA[Nichola Raihani]]></category>
		<category><![CDATA[parasites]]></category>
		<category><![CDATA[Redouan Bshary]]></category>
		<category><![CDATA[third-party punishment]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=3983</guid>
		<description><![CDATA[Cleaner fish remove parasites from other fish. Why do males punish females who eat the wrong food from their host? A clue to the evolution of cooperation?]]></description>
		<wfw:commentRss>http://whyfiles.org/2010/fish-phishing-attack-explained/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Testing touch</title>
		<link>http://whyfiles.org/2009/testing-touch-2/</link>
		<comments>http://whyfiles.org/2009/testing-touch-2/#comments</comments>
		<pubDate>Thu, 17 Dec 2009 21:49:21 +0000</pubDate>
		<dc:creator>svmedaristwf</dc:creator>
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		<category><![CDATA[Understandings about science and technology]]></category>
		<category><![CDATA[blind]]></category>
		<category><![CDATA[finger]]></category>
		<category><![CDATA[men]]></category>
		<category><![CDATA[merkels corpuscles]]></category>
		<category><![CDATA[sensitivity]]></category>
		<category><![CDATA[sighted]]></category>
		<category><![CDATA[tactile]]></category>
		<category><![CDATA[touch]]></category>
		<category><![CDATA[women]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=3903</guid>
		<description><![CDATA[Why do women have better sense of touch? It's all in the size, and big isn't better...]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/testing-touch-2/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Death of the mastodon</title>
		<link>http://whyfiles.org/2009/death-of-the-mastodon/</link>
		<comments>http://whyfiles.org/2009/death-of-the-mastodon/#comments</comments>
		<pubDate>Fri, 20 Nov 2009 02:32:53 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Abilities necessary to do scientific inquiry]]></category>
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		<category><![CDATA[Paleontology & archeology]]></category>
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		<category><![CDATA[climate change]]></category>
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		<category><![CDATA[extinction]]></category>
		<category><![CDATA[fungal spores]]></category>
		<category><![CDATA[giant sloth]]></category>
		<category><![CDATA[Gill]]></category>
		<category><![CDATA[hunting]]></category>
		<category><![CDATA[ice age]]></category>
		<category><![CDATA[mammals]]></category>
		<category><![CDATA[mammoth]]></category>
		<category><![CDATA[mastodon]]></category>
		<category><![CDATA[North America]]></category>
		<category><![CDATA[overkill hypothesis]]></category>
		<category><![CDATA[pollen]]></category>
		<category><![CDATA[University Of Wisconsin Madison]]></category>
		<category><![CDATA[wildfire]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=3705</guid>
		<description><![CDATA[It's one of the biggest puzzles of paleontology: Why did North America's large mammals go extinct shortly after the glaciers melted about 15k years ago? New study suggests that hunters get the credit -- or blame.]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/death-of-the-mastodon/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Animal arms race</title>
		<link>http://whyfiles.org/2009/animal-arms-race/</link>
		<comments>http://whyfiles.org/2009/animal-arms-race/#comments</comments>
		<pubDate>Thu, 16 Jul 2009 20:44:36 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Aaron Corcora]]></category>
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		<category><![CDATA[evolution]]></category>
		<category><![CDATA[insects]]></category>
		<category><![CDATA[jam sonar]]></category>
		<category><![CDATA[predator]]></category>
		<category><![CDATA[prey]]></category>
		<category><![CDATA[sonar]]></category>
		<category><![CDATA[tiger moth]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=2684</guid>
		<description><![CDATA[The struggle between predator and prey never ends. Bats invented sonar, and now some moths are fighting back. Check out the Why Files acoustic-organic warfare, airborne edition.]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/animal-arms-race/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Senators, governors and other mammals&#8230;</title>
		<link>http://whyfiles.org/2009/senators-governors-and-other-mammals/</link>
		<comments>http://whyfiles.org/2009/senators-governors-and-other-mammals/#comments</comments>
		<pubDate>Thu, 09 Jul 2009 22:19:39 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Darwinian psychology]]></category>
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		<category><![CDATA[Mark Sanford]]></category>
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		<category><![CDATA[politician]]></category>
		<category><![CDATA[sexual attraction]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=2668</guid>
		<description><![CDATA[Can our evolutionary roots explain that self-destructive search for sex - and sexual companionship? Could Darwinian psychology constitute the cause home-wrecking, career-blitzing fatal attractions?]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/senators-governors-and-other-mammals/feed/</wfw:commentRss>
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		</item>
		<item>
		<title>How a fly detects a poison</title>
		<link>http://whyfiles.org/2009/how-a-fly-detects-a-poison/</link>
		<comments>http://whyfiles.org/2009/how-a-fly-detects-a-poison/#comments</comments>
		<pubDate>Thu, 02 Jul 2009 21:44:34 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Food]]></category>
		<category><![CDATA[fruit fly]]></category>
		<category><![CDATA[glutamate]]></category>
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		<category><![CDATA[taste receptor]]></category>
		<category><![CDATA[toxic chemicals]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=2654</guid>
		<description><![CDATA[Animals spend a lot of energy avoiding toxic chemicals in their food. A new type of gene that does this in fruit flies reinforces the importance of reproduction in shaping evolution.]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/how-a-fly-detects-a-poison/feed/</wfw:commentRss>
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