CBS NEWS PRESENTS: "THE AGE OF WARMING" ON SUNDAY, JANUARY 20, 7:00-8:00 PM, ET/PT
Nowhere is the evidence of global warming as striking than near the earth's poles. CBS News correspondent Scott Pelley's report brings him to the top and the bottom of the world, where scientists point out the effects of the warming trend. He also speaks to NASA's top scientist studying climate, who says the Bush administration has restricted what he can say about global warming. Catherine Herrick and Bill Owens are the producers.