Other impacts, such as those associated with the rapid thawing of permafrost in Alaska, are unique to a particular U.S. region. (nca2014.globalchange.gov)
Arctic methane emissions were projected to at least double during the 21st century, partly because of an increase in wetlands caused by thawing of permafrost, it said. (reuters.com)
The real concern is that climate change may soon causing the large - scale thawing of permafrost around the world; second only in size to tropical rainforests, boreal forests cover a vast swathe of land in the upper latitudes of Alaska, Siberia, China, Scandinavia and the Yukon. (treehugger.com)