"A last-ditch attempt at passing a climate change bill begins in the Senate this week with senators mindful that time is running short and that approaches to the legislation still vary widely, according to sources."

"If the U.S. adopts a cap-and-trade program, companies facing carbon controls could meet part of their obligations by preserving Earth's largest tropical forest."

"The sharp-tongued U.N. official who shepherded troubled climate talks for nearly four years announced his resignation Thursday, leaving an uncertain path to a new treaty on global warming."

"Industry groups, conservative think tanks, lawmakers and three states filed 16 court challenges to U.S. EPA's "endangerment" finding for greenhouse gases before yesterday's deadline, setting the stage for a legal battle over federal climate policies."

"The U.N. climate chief Yvo de Boer has resigned to join a consultancy group as an adviser, the U.N. climate secretariat said on Thursday, two months after a disappointing Copenhagen summit."

"The coastal fog that gives San Francisco its romantic ambience is thinning out, a boon to drivers but a real threat to the giant redwoods there, researchers reported on Monday."

"Ex-weatherman Anthony Watts says many US weather stations produce unreliable data because they are located next to artificial heat -- but a scientific analysis suggests that, if anything, such stations underestimate warming."

"There’s an interesting insurgency that may give lie to recent predictions of federal failure on cap and trade. Sen. Maria Cantwell (D-Wash.) has a modified 'cap and dividend' bill, called the CLEAR Act, that’s slowly but surely picking up momentum."

"The U.S. Chamber of Commerce announced late Friday that it would challenge the Environmental Protection Agency's decision to regulate greenhouse gas emissions under the Clean Air Act, setting the stage for a protracted legal battle with the Obama administration over global warming."

"Britain and Ethiopia will head a new United Nations panel that aims to secure $100 billion every year by 2020 to help developing nations cut emissions and adapt to climate change, U.N. Secretary-General Ban Ki-moon said on Friday."

"The U.S. Senate's stalled climate bill is getting a last big push from an unlikely ally -- a group of energy companies who say a carbon market will help them get financing for the next generation of energy production."

"Citing financial worries, the State of Arizona has backed out of a broad regional effort to limit greenhouse gas emissions in the West through a cap-and-trade system."

"A new study published in the Feb. 12 issue of Science indicates that the balance of the world's ice may be shifting faster than scientists thought, which may have consequences in a warming world."

"WASHINGTON — As millions of people along the East Coast hole up in their snowbound homes, the two sides in the climate-change debate are seizing on the mounting drifts to bolster their arguments."

"The number of companies and organizations hiring energy lobbyists reached record levels last year as major climate legislation worked its way through Congress."