Polar bears drown, islands appear in Arctic thaw

OSLO (Reuters) - Polar bears are drowning and receding Arctic glaciers have uncovered previously unknown islands in a drastic 2006 summer thaw widely blamed on global warming.

Signs of wrenching changes are apparent around the Arctic region due to unusual warmth -- the summer minimum for ice is usually reached between mid-September and early October before the Arctic freeze extends its grip.

"We know about three new islands this year that have been uncovered because the glaciers have retreated," said Rune Bergstrom, environmental adviser to the governor of Svalbard, a Norwegian archipelago about 1,000 km (600 miles) from the North Pole.