A new study suggests that Sudden Aspen Decline, which is killing many trees in the Rocky Mountains, is caused by dehydration and drought.

"A US climate scientist at the centre of a row over Republican presidential candidate Newt Gingrich's stance on climate change has spoken out for the first time.

"LAKE ANDES, S.D. (AP) — Famous for its role as Harry Potter's companion in the books and movies, a species of majestic, mostly white owls is being sighted in abundant numbers this winter far from both Hogwarts and its native Arctic habitat.

It's typical for snowy owls to arrive in the U.S. every three or four winters, but this year's irruption is widespread, with birders from the Pacific Northwest to New England reporting frequent sightings of the yellow-eyed birds. As many as 30 were spotted in December around South Dakota's Lake Andes.

A British police investigation and the release of new e-mails are prompting pointed speculation about who hacked, stole, and leaked private emails from climate scientists at the University of East Anglia.

"Climate change dropped even further from the world's headlines and newscasts last year. Weird weather, Australia's carbon tax and Solyndra fracas weren't enough to stem a decline that started in 2009."

"Efforts by developed countries to redistribute promised funds to help poorer parts of the world avoid environmental disasters have been described as 'dismal' by the foreign minister of Bangladesh."

"State insurance regulators are feeling pressure to address climate change before a federal counterpart established last year moves in on their territory."

A conservative GOP freshman congressman from Ohio, Bill Johnson, has been attacking federal surface-mining regulation for costing jobs. It advances him politically. The only problem is that it does not seem to be true.

"A European court ruled Wednesday that airlines flying into and out of European airports will have to pay a price for the carbon dioxide they emit when they burn jet fuel."