"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."

"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."

"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."

"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. 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."

"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."

"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."

"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."

"Rising sea levels already threaten South Florida's coastal floodgates, likely prompting the need for costly retrofits to protect some of the state's most populated areas, water managers warned Wednesday."