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150,000 methane seeps in Alaska and Greenland identified.<br><br>Methane (CH4) is second to carbon dioxide (C02) as a greenhouse gas.<br><br><font style="font-size: 10pt;" face="Tahoma " size="2"><a href="http://www.bbc.co.uk/news/science-environment-18120093">http://www.bbc.co.uk/news/science-environment-18120093</a></font><br> </div></body>
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