"Over 1,700 scientists in Britain have signed a statement defending the evidence for human-made climate change in the wake of hacked e-mails that emboldened climate skeptics."

"Here's what the historic meeting in Denmark can—and should—accomplish."

As world leaders gather for climate talks in Denmark, producer Christy George tracks climate change impacts in Denmark, Oregon. Along the way she finds "new voices -- psychologists, philosophers and poets -- wrestling with the enormity of the changes facing the place they call home."

"The city of Seattle announced this afternoon that its greenhouse gas emissions in 2008 were 7 percent below what they were in 1990 — a target the city had hoped to meet by 2012. But it's not at all clear how or if the city will still meet the goal three years from now."

"Negotiators on Wednesday worked to bridge the chasm between rich and poor countries over how to share the burden of fighting climate change, and a top U.S. envoy was to highlight the Obama administration's efforts to curb greenhouse emissions."

"The Obama administration's greenhouse gas ruling Monday was meant to send a warning to industry, the U.S. Congress, and the world: with or without a law, Washington will tackle global warming in a serious way."

"The head of the U.N.'s panel of climate scientists on Monday strongly defended findings that humans are warming the planet, after critics said that leaked emails from a British university had undermined evidence."

"A Senate Energy and Natural Resources subcommittee will consider nine energy and climate policy bills this week, covering topics from engineering education and wind energy research to carbon capture technology development incentives and biofuels for small engines."

"The current decade has been by far the warmest decade on instrumental record, the U.K.'s Meteorological Office said Tuesday as it released new figures at the climate change talks in Copenhagen."

"Asian rice farmers typically do not fly around the world on holidays or own big-engine cars but scientists say they have an important role to play in helping cut the world's output of greenhouse gases."

"In the long term, the Earth's temperature may be 30-50% more sensitive to atmospheric carbon dioxide than has previously been estimated, reports a new study published in Nature Geoscience this week."

"The largest and most important U.N. climate change conference in history opened Monday, with organizers warning diplomats from 192 nations that this could be the best, last chance for a deal to protect the world from calamitous global warming."

"Germany's top climate researcher says he hopes he and his fellow scientists around the world have got it all wrong about global warming. Hans Joachim Schellnhuber, head of the Potsdam Institute for Climate Impact Research, told Reuters he gets no pleasure at all in being a prophet of doom and hopes he and his colleagues have overlooked effects that could still arrest climate change."

"The heads of the world's largest international financial institutions today called for a comprehensive agreement to combat climate change at this month's United Nations conference in Copenhagen and agreed to further coordinate their own efforts to help achieve the meeting's ambitious goals."

"Two environmental groups petitioned U.S. EPA today to set national limits for greenhouse gases using the Clean Air Act."