"Advocates for comprehensive climate legislation should look no further than the nation's unemployment rate as they ponder their chances for success this year."

"The treeless ecosystem of mosses, lichens, and berry plants is giving way to shrub land and boreal forest. As scientists study the transformation, they are discovering that major warming-related events, including fires and the collapse of slopes due to melting permafrost, are leading to the loss of tundra in the Arctic."

"Frigid weather that has gripped swathes of the northern hemisphere this winter is unusual but does not undermine an overall global trend of warming, experts said on Monday."

"Basalt formations off the East Coast of the U.S. could suck up a billion tons of carbon dioxide, according to a new study. Paleontologist Paul Olsen, of Columbia University's Lamont-Doherty Earth Observatory, explains how to get the CO2 into the rocks, and why scientists believe it won't leak out."

Scientists seeing signs of global warming-related stress in western Hudson Bay polar bears ask whether the hungry bears are turning to cannibalism.

"Senate climate legislation advocates are bracing for a floor battle this month over a Republican campaign that they fear could drag down efforts to pass a major global warming bill before the real legislative debate can start."

"Nearly half of global money managers are making investment decisions without factoring in risks or opportunities associated with climate change, according to a survey released on Wednesday by a coalition of environmentalists and investors."

"Scientists have uncovered what appears to be a further dramatic increase in the leakage of methane gas that is seeping from the Arctic seabed."

"An environmental group today announced plans to flood Senate offices with calls urging action on climate legislation."