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Avoiding A Climate Tipping Point

If the global temperature goes past 2 degrees Celsius - the danger point - we might not be able to get the climate back to a more natural state (Photo courtesy of NASA)

Two new studies in the journal Nature are trying to answer: how much is too much when it comes to global warming? Rebecca Williams reports:

One of the studies from Nature

The second study from Nature

A related article from Scientific American

Producer: Rebecca Williams
Release Date: May 4, 2009
Running Time: :52

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