"China laid out a plan to curb carbon emissions by 2020 and U.S. President Barack Obama called on all nations to act now to tackle global warming, as world leaders tried to inject momentum into climate change talks."

"The U.S. Department of Agriculture's deregulation of genetically engineered RoundUp Ready sugar beets in 2004 was unlawful, a federal court in California ruled Monday."

"The Environmental Protection Agency said on Tuesday that it would require the nation’s biggest emitters of greenhouse gases to start tracking their emission levels on Jan. 1 and report them to the government."

"The U.S. Environmental Protection Agency filed a complaint against VF Corp, owner of the North Face brand, on Tuesday, claiming that more than 70 styles of shoes advertised as bacteria-killing by the company had not been registered with the agency."

Residents in Georgia and Alabama returned to waterlogged homes after flooding caused by torrential rains caused at least nine deaths.

"Pacific Gas & Electric, the big California utility, has pulled out of the United States Chamber of Commerce over what its chairman, Peter Darbee, termed 'fundamental differences' over the climate change issue."

"A possible amendment from Sen. Lisa Murkowski (R-Alaska) has the potential to handcuff U.S. EPA from exercising its full regulatory power [over greenhouse gases], a scenario that has sent shockwaves through the environmental community."

"The Obama administration ... released details of its national suite of auto standards that would mandate increased fuel economy and impose the first-ever greenhouse gas standard on the nation's cars and trucks."

"NEW HAVEN, W.Va. -- Poking out of the ground near the smokestacks of the Mountaineer power plant here are two wells that look much like those that draw natural gas to the surface. But these are about to do something new: inject a power plant's carbon dioxide into the earth."

"BILLINGS, Mont. -- Facing the combined pressures of climate change, hunters and lax protections, 600 grizzly bears in and around Yellowstone National Park are going back on the threatened species list under a federal court order issued Monday."

"Opponents of offshore oil drilling in the Arctic are making a last-ditch effort to convince the Obama administration to impose the same kind of moratorium on oil and gas development that it did on major commercial fishing in the Far North."

New drilling techniques have brought online U.S. natural gas reserves previously considered unreachable.

"As a species, the endangered Florida panther needs about 4,860 square miles in southern Florida to be protected as critical habitat to save the animal from extinction and recover the species, according to a new scientific petition submitted to the U.S. Fish and Wildlife Service by three nonprofit organizations."

"Solar energy developer BrightSource Energy, Inc. has withdrawn plans for a 5,000 acre solar thermal facility to be located in the Broadwell Valley in California's Mojave Desert."

"An incinerator that burns hazardous material from Utah and around the West is facing more than $500,000 in penalties for environmental violations."