ABC: The new U.N. Intergovernmental Panel on Climate Change report should serve as a "wake-up call" to governments and society about the role of humans in global warming, scientists say.
"It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century," the IPCC's Fifth Assessment Report, which was published Friday, found.
"This report confirms with even more certainty than in the past -- that it is extremely likely that the changes in our...