Vivvo CMS 4.1 PRI: Public Radio International http://www.pri.org/ ©2010 Spoonlabs d.o.o. PRI: Public Radio International http://www.pri.org/files.php?file=rss_682409203.gif http://www.pri.org/ Warming climate presents grave risk of greenhouse gas release in Arctic http://www.pri.org/stories/science/environment/warming-climate-presents-grave-risk-of-greenhouse-gas-release-in-arctic-12260.html Environment Mon, 03 Dec 2012 13:19:00 -0600 Deep beneath the frozen Arctic are deposits of methane. Lots of methane. And there's even more on the sea floor. As the environment warms, these deposits are being released into the atmosphere, presenting grave risks of runaway warming. PRI: Public Radio International