65 million Years with James Hansen

1/03/2011 04:30:00 PM ·

It's one of most discussed, rated, and  favorited science and technology youtube videos today. Why?

The topic being discussed is climate change and James Hansen, NASA's chief atmospheric scientist, is walking listeners thru the most recent geologic periods, and speaks to the commonly heard climate canard, "It's been hotter in earth's history before - so what's the big deal?'

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