Arctic Ice/Global Warming

Guests: James Hansen Director NASA Goddard Institute for Space Studies New York, New York James McCarthy Co-chair, Working Group II Intergovernmental Panel on Climate Change Professor, Oceanography Director, Museum of Comparative Zoology Harvard University Cambridge, Massachusetts Stephen Schneider Author, Laboratory Earth: The Planetary Gamble We Can't Afford to Lose (Basic Books, 1997) Professor, Biological Sciences Senior Fellow, Institute for International Studies Stanford University Stanford, California Scientists reported this week that they encountered long stretches of melted ice and open water during a recent cruise to the North Pole, leading other researchers to speculate whether the Arctic ice is showing the effects of global warming. Last week, a new study concluded that observed global warming has been mainly caused by greenhouse gases other than carbon dioxide—and mitigation efforts should take that into account.



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