The Intergovernmental Panel on Climate Change (IPCC), a team of hundreds of climate scientists, has sat down with representatives of more than a hundred nations and hammered out the summary of its fifth major report on world climate. There are no surprises, but climate science has progressed and sharpened the focus of its picture of the coming century. The IPCC now considers it "extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century." There is no sign that global warming has "paused," even if global average air temperature has done so for the last few yearsthe total heat being stored in Earth's air and ocean continues a steady rise. Also as disquieting is the steady drop in the ocean's pH as it continues to absorb high levels of carbon dioxide from the air.
Read more coverage of the report from the science press and other sources:
Science: Richard Kerr, "Even Greater Confidence of Looming Warming"
RealClimate: "The New IPCC Climate Report"
LiveScience: Denise Chow, "IPCC Climate Chnage Report: Experts React"
Dot Earth: Andrew Revkin, "Why More Climate Science Hasn't Led to More Climate PolicyYet"
Knight Science Journalism Tracker's Charlie Petit offers a roundup of mainstream media coverage