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	<title>The Why Files &#187; Geochemical cycles</title>
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		<title>Electric Cars: Meet the plug-in Hybrid</title>
		<link>http://whyfiles.org/2007/electric-cars-meet-the-plug-in-hybrid/</link>
		<comments>http://whyfiles.org/2007/electric-cars-meet-the-plug-in-hybrid/#comments</comments>
		<pubDate>Thu, 29 Nov 2007 19:36:31 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[Environment]]></category>
		<category><![CDATA[Geochemical cycles]]></category>
		<category><![CDATA[Grades 5-8]]></category>
		<category><![CDATA[Natural and human-induced hazards]]></category>
		<category><![CDATA[Science and technology in local, national, and global c]]></category>
		<category><![CDATA[Science as Inquiry]]></category>
		<category><![CDATA[Science in Personal and Social Perspectives]]></category>
		<category><![CDATA[Technology]]></category>
		<category><![CDATA[Transportation]]></category>
		<category><![CDATA[Understanding about scientific inquiry]]></category>
		<category><![CDATA[battery]]></category>
		<category><![CDATA[car]]></category>
		<category><![CDATA[electric]]></category>
		<category><![CDATA[electricity]]></category>
		<category><![CDATA[Energy]]></category>
		<category><![CDATA[gas]]></category>
		<category><![CDATA[hybrid]]></category>
		<category><![CDATA[plug-in hybrid]]></category>
		<category><![CDATA[smart grid]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=793</guid>
		<description><![CDATA[Hybrid cars and fuel cells increase auto efficiency and reduce pollution, but it's a long struggle from the idea to the reality.]]></description>
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		<title>Volcanic Violence</title>
		<link>http://whyfiles.org/2004/volcanic-violence/</link>
		<comments>http://whyfiles.org/2004/volcanic-violence/#comments</comments>
		<pubDate>Thu, 21 Oct 2004 16:28:00 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[Chemical reactions]]></category>
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		<category><![CDATA[Energy in the earth system]]></category>
		<category><![CDATA[Geochemical cycles]]></category>
		<category><![CDATA[Grades 5-8]]></category>
		<category><![CDATA[Grades 9-12]]></category>
		<category><![CDATA[Motions and forces]]></category>
		<category><![CDATA[Physical Science]]></category>
		<category><![CDATA[Structure of the earth system]]></category>
		<category><![CDATA[TAP]]></category>
		<category><![CDATA[Transfer of energy]]></category>
		<category><![CDATA[community forestry]]></category>
		<category><![CDATA[ecological recovery]]></category>
		<category><![CDATA[eruption]]></category>
		<category><![CDATA[forecast]]></category>
		<category><![CDATA[forestry cooperative]]></category>
		<category><![CDATA[Krakatau]]></category>
		<category><![CDATA[lahar]]></category>
		<category><![CDATA[lava]]></category>
		<category><![CDATA[magma]]></category>
		<category><![CDATA[Mount St. Helens]]></category>
		<category><![CDATA[Paricutin]]></category>
		<category><![CDATA[predict]]></category>
		<category><![CDATA[pyroclastic flow]]></category>
		<category><![CDATA[San Juan Parangaricutiro]]></category>
		<category><![CDATA[volcanic landscape]]></category>
		<category><![CDATA[volcano]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=605</guid>
		<description><![CDATA[How do we forecast or predict volcanoes? How do volcanoes change the landscape? How does life return after an eruption?]]></description>
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		<title>Food Pyramid Gets Facelift</title>
		<link>http://whyfiles.org/2003/food-pyramid-gets-facelift/</link>
		<comments>http://whyfiles.org/2003/food-pyramid-gets-facelift/#comments</comments>
		<pubDate>Thu, 19 Jun 2003 14:15:17 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[Bio brainstorms]]></category>
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		<category><![CDATA[Disease and Treatment]]></category>
		<category><![CDATA[Environment]]></category>
		<category><![CDATA[Food]]></category>
		<category><![CDATA[Geochemical cycles]]></category>
		<category><![CDATA[Grades 5-8]]></category>
		<category><![CDATA[Health]]></category>
		<category><![CDATA[Obesity]]></category>
		<category><![CDATA[Personal health]]></category>
		<category><![CDATA[Population growth]]></category>
		<category><![CDATA[Science and technology in society]]></category>
		<category><![CDATA[Science in Personal and Social Perspectives]]></category>
		<category><![CDATA[carbohydrates]]></category>
		<category><![CDATA[fat]]></category>
		<category><![CDATA[food pyramid]]></category>
		<category><![CDATA[meal]]></category>
		<category><![CDATA[nutrition]]></category>
		<category><![CDATA[USDA]]></category>
		<category><![CDATA[vitamins]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=677</guid>
		<description><![CDATA[To battle the bulging waistline, the feds have devised 12 food pyramids to help choose a lifestyle that balances nutrition and excercise. Is this mound helpful?]]></description>
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		<title>Galapagos: The Evolution Islands</title>
		<link>http://whyfiles.org/2001/galapagos-islands/</link>
		<comments>http://whyfiles.org/2001/galapagos-islands/#comments</comments>
		<pubDate>Thu, 11 Jan 2001 20:30:29 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
				<category><![CDATA[Abilities necessary to do scientific inquiry]]></category>
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		<category><![CDATA[Biology]]></category>
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		<category><![CDATA[Genetic revolution]]></category>
		<category><![CDATA[Geochemical cycles]]></category>
		<category><![CDATA[Grades 5-8]]></category>
		<category><![CDATA[Grades 9-12]]></category>
		<category><![CDATA[Interdependence of organisms]]></category>
		<category><![CDATA[Life Science]]></category>
		<category><![CDATA[Molecular basis of heredity]]></category>
		<category><![CDATA[Natural resources]]></category>
		<category><![CDATA[Plants & animals]]></category>
		<category><![CDATA[Reproduction and heredity]]></category>
		<category><![CDATA[Science as Inquiry]]></category>
		<category><![CDATA[Science history & process]]></category>
		<category><![CDATA[Science in Personal and Social Perspectives]]></category>
		<category><![CDATA[Charles Darwin]]></category>
		<category><![CDATA[conservation]]></category>
		<category><![CDATA[Darwin's finches]]></category>
		<category><![CDATA[development or environment]]></category>
		<category><![CDATA[Ecuador]]></category>
		<category><![CDATA[finches]]></category>
		<category><![CDATA[Galapagos]]></category>
		<category><![CDATA[giant tortoises]]></category>
		<category><![CDATA[overfishing]]></category>
		<category><![CDATA[resources]]></category>
		<category><![CDATA[theory of evolution]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=534</guid>
		<description><![CDATA[Are the Galapagos islands the birthplace of evolution theory and evolution science? What did Darwin learn there, and how are they being preserved nowadays?]]></description>
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		<item>
		<title>Natural Gas: Vast New Supply?</title>
		<link>http://whyfiles.org/2000/natural-gas-shortage/</link>
		<comments>http://whyfiles.org/2000/natural-gas-shortage/#comments</comments>
		<pubDate>Thu, 05 Oct 2000 18:28:25 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[Earth Science]]></category>
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		<category><![CDATA[Energy]]></category>
		<category><![CDATA[Environment]]></category>
		<category><![CDATA[Environment & pollution]]></category>
		<category><![CDATA[Geochemical cycles]]></category>
		<category><![CDATA[Grades 5-8]]></category>
		<category><![CDATA[Grades 9-12]]></category>
		<category><![CDATA[Structure of the earth system]]></category>
		<category><![CDATA[energy crisis]]></category>
		<category><![CDATA[energy exploration]]></category>
		<category><![CDATA[energy supply]]></category>
		<category><![CDATA[gas hydrates]]></category>
		<category><![CDATA[methane hydrates]]></category>
		<category><![CDATA[natural gas]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=630</guid>
		<description><![CDATA[Gas hydrates under the ocean may contain an almost unlimited supply of energy, but they're hard to get, and using them could make global warming even worse. Now a UC-Riverside professor says quick releases of frozen methane could cause a climate catastrophe. So is this gas a blessing, a curse, or both?]]></description>
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		<title>Climate: Fast Change Is Real. Deal with It!</title>
		<link>http://whyfiles.org/2000/climatic-sees-aw/</link>
		<comments>http://whyfiles.org/2000/climatic-sees-aw/#comments</comments>
		<pubDate>Mon, 10 Jul 2000 19:15:32 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Atmospheric science]]></category>
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		<category><![CDATA[Earth and Space Science]]></category>
		<category><![CDATA[Environment]]></category>
		<category><![CDATA[Geochemical cycles]]></category>
		<category><![CDATA[Grades 5-8]]></category>
		<category><![CDATA[Grades 9-12]]></category>
		<category><![CDATA[Weather & Climate]]></category>
		<category><![CDATA[abrupt climate change]]></category>
		<category><![CDATA[climate]]></category>
		<category><![CDATA[foraminifera]]></category>
		<category><![CDATA[global warming]]></category>
		<category><![CDATA[Holocene period]]></category>
		<category><![CDATA[North Atlantic]]></category>
		<category><![CDATA[paleoclimate]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=820</guid>
		<description><![CDATA[New research shows that climate of the entire North Atlantic region cooled abruptly and repeatedly during the Holocene period. Drill hole reveals rapid temperature change during past few thousand years. If climate could change so much back then, what about today? ]]></description>
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