National Public Radio: Declaring that "human influence on the climate system is clear," a U.N.-assembled panel of scientists reported Friday that "it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century."
The Intergovernmental Panel on Climate Change, which brings together hundreds of researchers from around the world, adds that "warming in the climate system is unequivocal and since 1950 many changes have been observed throughout the climate system...