Stefan Rahmstorf

An iceberg melts off Ammassalik Island in Eastern Greenland, July 19, 2007. (AP Photo/John McConnico, File)

Warming lull haunts authors of key climate report

STOCKHOLM (AP) — Scientists working on a landmark U.N. report on climate change are struggling to explain why global warming appears to have slowed down in the past 15 years even though greenhouse gas emissions […]

09/19/2013

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