"President Obama and other world leaders have decided to put off the difficult task of reaching a climate change agreement at a global climate conference scheduled for next month, agreeing instead to make it the mission of the Copenhagen conference to reach a less specific 'politically binding' agreement that would punt the most difficult issues into the future."

"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."

"Ocean acidification, caused by rising CO2 levels, is affecting not only coral reefs, but coastal ecosystems by changing everything from the ability of oysters to adhere to the riverbed to the extent of dead zones along the U.S. Pacific coast."

"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 Ninth World Wilderness Congress in Mérida, Yucatán, [is] an event that draws together top conservation officials and activists from across the globe to tackle trans-national wilderness issues."

"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."