• http://www.commondreams.org, Common Dreams staff
New research that utilized both ground-based measurements and aerial surveys in specific sub-arctic regions in Alaska and Greenland has discovered approximately 150,000 'methane seeps' - a phenomenon where methane gas previously held in the frozen permafrost beneath tundras or under arctic sea ice, is steadily released when warming causes melting.
Methane is a potent greenhouse gas and the sheer amount of it that is naturally existing -- some of it trapped under ground for hundreds or thousands of years -- would dwarf the impact of man-made emission levels if it was released at a rapid rate.
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