Wednesday, December 13, 2006
The top of the world is melting. There's been a debate burning for years about the causes of global warming, but the scientists you're about to meet say the debate is over. The seas are rising, the earth is getting hotter and polar bears may be headed toward extinction. What does the melting Arctic look like? 60 Minutes Correspondent Scott Pelley went north to see.
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Does the new evidence prove that mankind is responsible for global warming?
Science of Climate Change
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