In a new study reported in Nature, climate scientist Rob DeConto of the University of Massachusetts Amherst and colleagues elsewhere propose a simple new mechanism to explain the source of carbon that fed a series of extreme warming events about 55 million years ago, the Paleocene-Eocene Thermal Maximum (PETM), and a sequence of similar, smaller warming events afterward.
Arctic sea ice literally halved – September 2012 smashes old record, 3.29 million km2 ice gone
As the days shorten and the summer sun is slowly setting under the horizon, the frost is returning to the Arctic and American scientists make up the balance of what has turned out to be an unprecedented melting season. The … Continue reading