James Hansen

Monday, June 23, 2008 - 10:06 a.m.
James Hansen

On the 20th anniversary of his groundbreaking global warming testimony before the U.S. Senate, James Hansen discusses his belief that the planet is dangerously close to tipping points that would be extremely difficult to reverse. The NASA...

On the 20th anniversary of his groundbreaking global warming testimony before the U.S. Senate, James Hansen discusses his belief that the planet is dangerously close to tipping points that would be extremely difficult to reverse. The NASA climate scientist reflects on what has and hasn't changed in two decades, political pressures, and the controversy he's stirred by speaking out.

Guests

James Hansen

climate scientist; director, NASA Goddard Institute for Space Studies

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