U.N. Climate Change Report Points Blame at Humans

cnn.com - by Dave Hennen, Brandon Miller and Eliott C. McLaughlin - September 27, 2013

(CNN) -- The world's getting hotter, the sea's rising and there's increasing evidence neither are naturally occurring phenomena.

So says a report from the U.N. International Panel on Climate Change, a document released every six years that is considered the benchmark on the topic. More than 800 authors and 50 editors from dozens of countries took part in its creation.

The summary for policymakers was released early Friday, while the full report, which bills itself as "a comprehensive assessment of the physical science basis of climate change," will be distributed Monday. Other reports, including those dealing with vulnerability and mitigation, will be released next year.

Here are the highlights from Friday's summary:

Man-made climate change is almost certain

Climate scientists are 95% confident -- that is to say, surer than ever -- that humans are responsible for at least "half of the observed increase in global average surface temperatures since the 1950s."

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