Several clips on global warming

[j d worthington]

As these were from a popular television news magazine, they are simplified, and certainly don't have the time required to discuss the subject as it should be; nonetheless, I thought some might find them of interest:

Global Warming ...on 60 Minutes; Exclusive Video Only on Yahoo! News

And, in case the link expires, here's the introductory text (the title being A GLOBAL WARNING ON GLOBAL WARMING) from 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.