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	<title>CO2 as plant food &#8211; Greg Laden&#039;s Blog</title>
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		<title>Global Warming = Drought = Higher Food Prices</title>
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		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Fri, 08 Feb 2013 16:48:04 +0000</pubDate>
				<category><![CDATA[Climate Change]]></category>
		<category><![CDATA[climate change graphics]]></category>
		<category><![CDATA[Climate Change Graphics]]></category>
		<category><![CDATA[CO2 as plant food]]></category>
		<category><![CDATA[Global Warming]]></category>
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					<description><![CDATA[Here&#8217;s a graph from the USDA: This comes from a post by Peter Sinclair: USDA: Warming Will Devastate Agriculture. Also from that post, this interview with Phil Robertson of Michigan State University related to the question of C02 as &#8220;plant food.&#8221;]]></description>
		
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