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Stephen Hawking and Carl Sagan on the Greenhouse Effect

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Uploaded on Jul 22, 2010

Support Climate Denial Crock of the Week
http://climatecrocks.com/

A lot of people still believe global warming is something Al Gore cooked up in 2006 to promote his movie.
The thousands of expert climate scientists whose work forms the consensus have no celebrity, no street cred with the average person. But for a lot of people, the archetypes of scientific expertise, are more popular media figures like Stephen Hawking and Carl Sagan.
I offer this to, once again, make clear again how wide and deep the consensus on this issue is.

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