HUFFINGTON POST
03/28/2008 02:44 am ET Updated May 25, 2011

"Humans Are Changing The Composition Of The Atmosphere In A Manner That Has No Known Natural Parallel

The rapid rise in greenhouse gases over the past century is unprecedented in at least 800,000 years, according to a study of the oldest Antarctic ice core which highlights the reality of climate change.

Air bubbles trapped in ice for hundreds of thousands of years have revealed that humans are changing the composition of the atmosphere in a manner that has no known natural parallel.

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