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Global warming

2 talks about Global warming

Energy, the Environment, and What We Can Do
54:53
Beginner

Energy, the Environment, and What We Can Do

John Baez
Google Tech Talks
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April 5 2012
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Anthropogenic Global Warming: How Real Is It?
01:26:58
Beginner

Anthropogenic Global Warming: How Real Is It?

Fred Singer
Google Tech Talks
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September 14 2011
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