"Secretary of State Hillary Rodham Clinton touched down Wednesday on Greenland’s rocky, snow-flecked coast for two days of talks on the Arctic, as the Obama administration seeks to draw attention to the rapidly accelerating loss of sea ice and surging interest in the region’s natural resources."

A new study released by the American Physical Society says that the dream of pulling carbon dioxide out of ambient air as a cure for global warming would be prohibitively expensive.

"Nations and individuals have a duty to reduce greenhouse gas emissions and enact policies that mitigate global warming, said a Vatican-sponsored working group."

"Renewable energy could meet nearly 80 percent of the world's energy needs by mid-century and play a crucial role in fighting global warming, the UN's climate scientists said Monday in a major report."

"Thursday night's Republican debate was worth watching if only to see Tim Pawlenty try to talk his way around his previous support for efforts to cut planet-warming emissions. As governor of Minnesota, Pawlenty not only acknowledged that climate change is a problem, but also endorsed a cap-and-trade plan to deal with it. That makes him something of a pariah among other Republicans these days."

"The protracted fight over this year's federal budget has left its mark on the nation's climate and weather satellites, experts said yesterday at a conference organized by defense trade publisher IHS Jane's."