Polar bear sightings stir climate debate
Friday, August 22, 2008 - 17:21
in Earth & Climate
Environmentalists say more are drowning in search of stable ice. Federal wildlife monitors spotted nine polar bears in one day swimming in open ocean off Alaska's northwest coast, and environmental groups say the event is a strong signal that diminished sea ice brought on by warming has put U.S. bears at risk of drowning or dying from effects of fatigue.