A new U.N. report on climate change just out overnight presents the strongest evidence yet that human activities are largely to blame for the warming of the planet.
The panel's scientists peg it to a 95 percent certainty. CNN’s Indra Petersons reports.
The report is the first issued in six years by the U.N.'s Intergovernmental Panel on Climate Change and says the Arctic sea ice is melting and oceans are warming and rising.
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