"Cutting soot and other air pollutants could help 'buy time' in the fight against climate change, a senior U.S. official said on Tuesday as seven nations joined a Washington-led plan."

"Three simple numbers that add up to global catastrophe - and that make clear who the real enemy is."

"The surface of Greenland's massive ice sheet has melted this month over an unusually large area, NASA has said."

"OSAKA — The central government-sponsored public hearings on Japan's energy future moved to west Japan on Sunday, with the majority of designated speakers and attendees favoring either a complete withdrawal from nuclear power by 2030 or a near halving of the nation's reliance on it."

The Summer Olympics which begins Friday, July 27, 2012, in London proudly aims to be the greenest Olympics ever. It's a lofty goal. But critics challenge whether it will succeed, or whether any Olympics can avoid negative environmental impacts.

Researchers are studying whether the chytrid fungus -- which has decimated frog and salamander populations around the world -- is being spread among wild amphibians by the release of infected animals bought at pet stores. The fungus has devastated some 200 species globally, and may be responsible for the greatest known disease-caused loss of biodiversity in recorded history.

"A government-appointed inquiry into Japan's Fukushima nuclear crisis raised doubts on Monday about whether other atomic plants were prepared for massive disasters despite new safety rules, and delivered a damning assessment of the regulators and the station's operator."

"WASHINGTON — With the growing conviction that the Assad family’s 42-year grip on power in Syria is coming to an end, Obama administration officials worked on contingency plans Wednesday for a collapse of the Syrian government, focusing particularly on the chemical weapons that Syria is thought to possess and that President Bashar al-Assad could try to use on opposition forces and civilians."

"Norfolk police close case and confirm the hack came from 'sophisticated' outsiders – not a University of East Anglia leak."

"Japan will on Wednesday restart its second nuclear reactor after the Fukushima crisis closed the nation's atomic power plants, even as fresh concerns surfaced about the unit's positioning near a faultline."