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	<title>The Why Files &#187; Environment</title>
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	<link>http://whyfiles.org</link>
	<description>The Science Behind The News</description>
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			<item>
		<title>Tar sands</title>
		<link>http://whyfiles.org/2009/tar-sands/</link>
		<comments>http://whyfiles.org/2009/tar-sands/#comments</comments>
		<pubDate>Thu, 29 Oct 2009 20:04:39 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Grades 5-8]]></category>
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		<category><![CDATA[air pollution]]></category>
		<category><![CDATA[Alberta]]></category>
		<category><![CDATA[athabasca river]]></category>
		<category><![CDATA[Canada]]></category>
		<category><![CDATA[fossil fuel]]></category>
		<category><![CDATA[global warming]]></category>
		<category><![CDATA[greenhouse gases]]></category>
		<category><![CDATA[heavy oil]]></category>
		<category><![CDATA[oil sands]]></category>
		<category><![CDATA[peak oil]]></category>
		<category><![CDATA[pollution]]></category>
		<category><![CDATA[synthetic crude oil]]></category>
		<category><![CDATA[tar sands]]></category>
		<category><![CDATA[water pollution]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=3506</guid>
		<description><![CDATA[Canada's oil-drenched sands give it the second-largest oil reserves in the world. Using the "tar sands" pollutes air and water, destroys forests and could cause cancer. Should we leave oil sands alone?]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/tar-sands/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>No joke: Laughing gas attacks ozone!</title>
		<link>http://whyfiles.org/2009/no-joke-laughing-gas-attacks-ozone/</link>
		<comments>http://whyfiles.org/2009/no-joke-laughing-gas-attacks-ozone/#comments</comments>
		<pubDate>Thu, 03 Sep 2009 20:19:42 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Weather & Climate]]></category>
		<category><![CDATA[Antarctic ozone hole]]></category>
		<category><![CDATA[laughing gas]]></category>
		<category><![CDATA[Montreal Protocol]]></category>
		<category><![CDATA[nitrous oxide]]></category>
		<category><![CDATA[ozone]]></category>
		<category><![CDATA[ozone depleting substances]]></category>
		<category><![CDATA[ozone depletion potential]]></category>
		<category><![CDATA[ozone layer]]></category>
		<category><![CDATA[stratospheric ozone]]></category>
		<category><![CDATA[ultraviolet radiation]]></category>
		<category><![CDATA[UV-B]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=2773</guid>
		<description><![CDATA[The ozone layer protects Earth from UV rays: Twenty-two years after a treaty to protect ozone, how is the layer doing? What has happened to the ozone hole above Antarctica?]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/no-joke-laughing-gas-attacks-ozone/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Fertilizing the ocean</title>
		<link>http://whyfiles.org/2009/fertilizing-the-ocean/</link>
		<comments>http://whyfiles.org/2009/fertilizing-the-ocean/#comments</comments>
		<pubDate>Thu, 06 Aug 2009 23:57:17 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Abilities of technological design]]></category>
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		<category><![CDATA[Energy in the earth system]]></category>
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		<category><![CDATA[Science and Technology]]></category>
		<category><![CDATA[Science in Personal and Social Perspectives]]></category>
		<category><![CDATA[The future]]></category>
		<category><![CDATA[algae]]></category>
		<category><![CDATA[carbon dioxide]]></category>
		<category><![CDATA[geoengineering]]></category>
		<category><![CDATA[global warming]]></category>
		<category><![CDATA[iron fertilization]]></category>
		<category><![CDATA[iron seeding]]></category>
		<category><![CDATA[john martin]]></category>
		<category><![CDATA[martin hypothesis]]></category>
		<category><![CDATA[oceanography]]></category>
		<category><![CDATA[plankton]]></category>
		<category><![CDATA[science process]]></category>
		<category><![CDATA[side effects]]></category>
		<category><![CDATA[southern ocean]]></category>
		<category><![CDATA[thermocline]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=2702</guid>
		<description><![CDATA[As Earth warms, we may need huge geoengineering projects to fight climate change. Would adding iron to fertilize ocean plants withdraw enough carbon dioxide to slow warming? Could the plan backfire?]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/fertilizing-the-ocean/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Bush creates huge Pacific reserves</title>
		<link>http://whyfiles.org/2009/bush-creates-huge-pacific-reserves/</link>
		<comments>http://whyfiles.org/2009/bush-creates-huge-pacific-reserves/#comments</comments>
		<pubDate>Sun, 25 Jan 2009 20:13:11 +0000</pubDate>
		<dc:creator>admin</dc:creator>
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		<category><![CDATA[Environmental quality]]></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[Natural resources]]></category>
		<category><![CDATA[Plants & animals]]></category>
		<category><![CDATA[Populations and ecosystems]]></category>
		<category><![CDATA[Science in Personal and Social Perspectives]]></category>
		<category><![CDATA[clam environmental protection]]></category>
		<category><![CDATA[coral]]></category>
		<category><![CDATA[effectiveness of marine protected areas]]></category>
		<category><![CDATA[fish]]></category>
		<category><![CDATA[George Bush]]></category>
		<category><![CDATA[Marianas trench]]></category>
		<category><![CDATA[marine reserves]]></category>
		<category><![CDATA[Pacific Ocean reserves]]></category>
		<category><![CDATA[Palmyra Atoll]]></category>
		<category><![CDATA[Rose Atoll]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=1161</guid>
		<description><![CDATA[Three giant new reserves, extend 50 miles out from shore, will protect coral reefs, fish, clams, and other life forms. But how effective are marine protected areas?]]></description>
		<wfw:commentRss>http://whyfiles.org/2009/bush-creates-huge-pacific-reserves/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Carbon tax or carbon trading? Can economics battle global warming?</title>
		<link>http://whyfiles.org/2008/carbon-tax-or-carbon-trading-can-economics-battle-global-warming/</link>
		<comments>http://whyfiles.org/2008/carbon-tax-or-carbon-trading-can-economics-battle-global-warming/#comments</comments>
		<pubDate>Thu, 04 Dec 2008 18:58:23 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[carbon dioxide cap-and-trade]]></category>
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		<category><![CDATA[economic efficacy]]></category>
		<category><![CDATA[economics]]></category>
		<category><![CDATA[emission trading]]></category>
		<category><![CDATA[Emission Trading Scheme]]></category>
		<category><![CDATA[global warming]]></category>
		<category><![CDATA[market mechanism]]></category>
		<category><![CDATA[reduce carbon pollution]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=1076</guid>
		<description><![CDATA[Carbon tax or carbon trading? Can economics battle global warming? As the United Nations gets set for (another!) pow-wow on global warming, policy wonks are focusing on two mechanisms to reduce carbon pollution. Which gets more control at a lower price: carbon tax or carbon cap-and-trade?]]></description>
		<wfw:commentRss>http://whyfiles.org/2008/carbon-tax-or-carbon-trading-can-economics-battle-global-warming/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Green as a garbage dump? Waste rots, makes energy…</title>
		<link>http://whyfiles.org/2008/green-as-a-garbage-dump-waste-rots-makes-energy%e2%80%a6/</link>
		<comments>http://whyfiles.org/2008/green-as-a-garbage-dump-waste-rots-makes-energy%e2%80%a6/#comments</comments>
		<pubDate>Thu, 06 Nov 2008 22:24:56 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[anaerobic digestion]]></category>
		<category><![CDATA[garbage]]></category>
		<category><![CDATA[landfill]]></category>
		<category><![CDATA[landfill gas]]></category>
		<category><![CDATA[manure]]></category>
		<category><![CDATA[methane]]></category>
		<category><![CDATA[methanogen]]></category>
		<category><![CDATA[natural gas]]></category>
		<category><![CDATA[pipeline]]></category>
		<category><![CDATA[recycling]]></category>
		<category><![CDATA[trash]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=1071</guid>
		<description><![CDATA[Decay is part of life, and death. When garbage decays in a landfill, or manure decays in a tank, the result is methane. Is this natural gas a problem -- or an opportunity?]]></description>
		<wfw:commentRss>http://whyfiles.org/2008/green-as-a-garbage-dump-waste-rots-makes-energy%e2%80%a6/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Gulf of Mexico: Dealing with the Dead Zone</title>
		<link>http://whyfiles.org/2008/gulf-of-mexico-dealing-with-the-dead-zone/</link>
		<comments>http://whyfiles.org/2008/gulf-of-mexico-dealing-with-the-dead-zone/#comments</comments>
		<pubDate>Thu, 03 Jul 2008 20:53:11 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[Grades 9-12]]></category>
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		<category><![CDATA[Technology]]></category>
		<category><![CDATA[agriculture]]></category>
		<category><![CDATA[clover]]></category>
		<category><![CDATA[control dead zone]]></category>
		<category><![CDATA[control fertilizer runoff]]></category>
		<category><![CDATA[corn]]></category>
		<category><![CDATA[dead zone]]></category>
		<category><![CDATA[fertilizer]]></category>
		<category><![CDATA[fish]]></category>
		<category><![CDATA[Gulf of Mexico]]></category>
		<category><![CDATA[hypoxia]]></category>
		<category><![CDATA[low oxygen]]></category>
		<category><![CDATA[marine ecology]]></category>
		<category><![CDATA[Mississippi River]]></category>
		<category><![CDATA[nitrate]]></category>
		<category><![CDATA[nitrogen]]></category>
		<category><![CDATA[phosphorus]]></category>
		<category><![CDATA[shellfish]]></category>
		<category><![CDATA[wetland]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=1055</guid>
		<description><![CDATA[When too much fertilizer reaches the Gulf of Mexico through the Mississippi River, a vast area gets robbed of oxygen. What can be done to reduce the dead zone that appears each summer?]]></description>
		<wfw:commentRss>http://whyfiles.org/2008/gulf-of-mexico-dealing-with-the-dead-zone/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<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[Grades 5-8]]></category>
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		<category><![CDATA[Science as Inquiry]]></category>
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		<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>
		<wfw:commentRss>http://whyfiles.org/2007/electric-cars-meet-the-plug-in-hybrid/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Nature: The natural prescription for health?</title>
		<link>http://whyfiles.org/2007/nature-the-natural-prescription-for-health/</link>
		<comments>http://whyfiles.org/2007/nature-the-natural-prescription-for-health/#comments</comments>
		<pubDate>Thu, 19 Apr 2007 20:53:23 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[Health]]></category>
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		<category><![CDATA[blood pressure]]></category>
		<category><![CDATA[effect of distraction]]></category>
		<category><![CDATA[health benefits]]></category>
		<category><![CDATA[heart rate]]></category>
		<category><![CDATA[images  of nature]]></category>
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		<category><![CDATA[nature]]></category>
		<category><![CDATA[quality of life]]></category>
		<category><![CDATA[research]]></category>
		<category><![CDATA[sense of well being]]></category>
		<category><![CDATA[time in the hospital]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=985</guid>
		<description><![CDATA[Could a walk in the park be good for you? Could looking out a window at a park be good for you? Can nature lower stress and promote healing? For centuries, philosophers, mystics and tree-huggers have talked up the benefits of nature.]]></description>
		<wfw:commentRss>http://whyfiles.org/2007/nature-the-natural-prescription-for-health/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Dramatic Rescue in the Wild!</title>
		<link>http://whyfiles.org/2007/dramatic-rescue-in-the-wilds/</link>
		<comments>http://whyfiles.org/2007/dramatic-rescue-in-the-wilds/#comments</comments>
		<pubDate>Thu, 25 Jan 2007 21:07:40 +0000</pubDate>
		<dc:creator>schulte</dc:creator>
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		<category><![CDATA[Gila Wilderness]]></category>
		<category><![CDATA[New Mexico]]></category>
		<category><![CDATA[psychology]]></category>
		<category><![CDATA[soul]]></category>
		<category><![CDATA[spirit]]></category>
		<category><![CDATA[value of wilderness]]></category>
		<category><![CDATA[wilderness rescue]]></category>

		<guid isPermaLink="false">http://whyfiles.org/?p=944</guid>
		<description><![CDATA[Woman is rescued in wilderness after 5-week ordeal. What is so great about wilderness, and why do so many people think they need it to soothe their souls?]]></description>
		<wfw:commentRss>http://whyfiles.org/2007/dramatic-rescue-in-the-wilds/feed/</wfw:commentRss>
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