Associated Press: The Intergovernmental Panel on Climate Change, an international body established by the U.N. in 1988, presented a summary of its latest assessment on climate change on Friday. Here are the key findings:
Global warming is "unequivocal," and since the 1950's it's "extremely likely" that human activities have been the dominant cause of the temperature rise.
Concentrations of carbon dioxide and other greenhouse gases in the atmosphere have increased to levels that are unprecedented in at least...