"Humans are having an effect on Earth's ecosystems but it's not just the depletion of resources and the warming of the planet we are causing. Now you can add an over-abundance of nitrogen as another "footprint" humans are leaving behind. The only question is how large of an impact will be felt. In a Perspectives piece in the current issue of Science, Arizona State University researcher James Elser outlines some recent findings on the increasing abundance of available nitrogen on Earth."

"The Justice Department is helping British authorities in an investigation into the hacking of climate scientists’ emails, which caused an uproar among skeptics of global warming when they were released two years ago."

"TOKYO -- Prime Minister Yoshihiko Noda of Japan today declared that the damaged reactors at the Fukushima Daiichi nuclear power plant have been brought to a state of cold shutdown, turning a corner in the world's worst nuclear disaster since Chernobyl.

'The nuclear reactors have reached a state of cold shutdown and therefore we can now confirm that we have come to the end of the accident phase of the actual reactors,' Prime Minister Noda told a news conference.

"Russia's vast tundra has been ravaged by oil companies unwilling to clean up their acts."

"FAIRBANKS, Alaska — A bubble rose through a hole in the surface of a frozen lake. It popped, followed by another, and another, as if a pot were somehow boiling in the icy depths. Every bursting bubble sent up a puff of methane, a powerful greenhouse gas generated beneath the lake from the decay of plant debris. These plants last saw the light of day 30,000 years ago and have been locked in a deep freeze — until now. ..."

"Police officers investigating the theft of thousands of private emails between climate scientists from a University of East Anglia server in 2009 have seized computer equipment belonging to a web content editor based at the University of Leeds.

"SAN FRANCISCO – Nearly 36,000 people gathered last week in two groups on opposite ends of the Earth to discuss the same thing: Our planet and our future. But their responses are starkly divergent. One group -- scientists at the American Geophysical Union meeting drilling ever deeper into the evidence -- said, in broad terms, 'Change is worse than we thought.' The other group -- delegates at the United Nations climate talks -- countered, 'Mañana.'"

"The Organization of the Petroleum Exporting Countries agreed on Wednesday to increase its production target for the first time in three years, a move that appeared to signal that Saudi Arabia and Iran had put aside their recent differences on oil policy, at least temporarily.

"Countries from around the globe agreed on Sunday to forge a new deal forcing all the biggest polluters for the first time to limit greenhouse gas emissions, but critics said the plan was too timid to slow global warming."