The melting of the permafrost is highly likely but the article misses the likely mechanism for this change. If the Arctic ice melts and the radiation of the sun is absorbed instead of being reflected, the Arctic could well become a zone of rising rather than falling air. The three cell circulation system of the northern hemisphere would then become either a 2 or a 4 cell system. If a two cell system results, the join between the two cells would occur at about 45 degrees north. This will result in air flowing along the surface of the earth from this latitude toward the poles. (At present, it flows from the poles southward). This will transfer massive amounts of heat northward, melting the permafrost and keeping the Arctic sea ... More »

This story reports on findings by two research agencies. It is unbiased, clear, well sources and shows the big picture.