What scientists discovered in Greenland could be making sea-level rise even worse

Rising global temperatures may be affecting the Greenland ice sheet – and its contribution to sea-level rise – in more serious ways that scientists imagined, a new study finds. Recent changes to the island’s snow and ice cover appear to have affected its ability to store excess water, meaning more melting ice may be running off into the ocean than previously thought.

Arctic Methane Emissions Underestimated By Scientists – Study

Greenland:  A Laboratory For The Symptoms Of Global Warming
Arctic permafrost has become a discussion point in the climate change debate because of the large amounts of carbon dioxide and methane that are released when it thaws. Rising temperatures in the Arctic are concerning for scientists, who are worried that thawing permafrost will become a major contributor to global emissions of greenhouse gases, writes The Washington Post.

Obama Runs Wild With Outdoorsman Bear Grylls

President Obama will appear Thursday night on the NBC reality show ” Running Wild with Bear Grylls.” The episode, which was filmed in September, follows the president on a walking tour with wilderness survival expert Bear Grylls around Alaska’s shrinking Exit Glacier. It airs on NBC Dec. 17 at 10 p.m.

USGS projects large loss of Alaska permafrost by 2100

Using statistically modeled maps drawn from satellite data and other sources, U.S. Geological Survey scientists have projected that the near-surface permafrost that presently underlies 38 percent of boreal and arctic Alaska would be reduced by 16 to 24 percent by the end of the 21st century under widely accepted climate scenarios.
via Phys