"In the new economy created by global warming, forests are turning into a valuable commodity. Promising not to cut them down is one of the most popular ways companies would like to offset their emissions. Correspondent Mark Schapiro follows the trail of one of those offset projects deep into Brazil's Atlantic forest."

"A coalition of conservation groups are calling on international climate negotiators in Copenhagen next month to develop land-use policy incentives intended to encourage governments to protect natural carbon storehouses -- especially those in northern boreal forests and peatlands found in Canada, Scandinavia and Russia."

"Scientists sifting for trends in record high and low temperatures across the United States have found  more evidence of long-term warming of the climate, with the biggest shift coming through a reduction in record low nighttime temperatures."

"Less than a month before negotiators will meet in Copenhagen with the lofty goal of crafting a deal to curb global greenhouse gas emissions, the Obama administration is considering endorsing a limited short-term climate pact and deferring more ambitious action until next year."

"With the clock ticking on the high-stakes Copenhagen climate summit, US President Barack Obama will try to salvage fading hopes for a deal as he meets this month with the leaders of China and India."

"The Army Corps of Engineers must consider the effects of climate change as it draws up plans for flood control, navigation and other water projects under a new agency policy."

"CHARLESTON, S.C. -- Republicans in Charleston County censured their own U.S. Sen. Lindsey Graham, saying he puts bipartisanship before the party on issues like climate change."

"As the world heads for tough negotiations over a global climate deal next month, an influential forecasting agency said on Tuesday that current energy policies were not sustainable, and that a vast transformation of energy use was required to fend off the worst consequences of global warming."