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"Atmospheric levels of methane, 20 times more powerful than carbon dioxide (CO2) at trapping heat, stayed steady for two decades to 2006 on wider fertilizer use to grow rice or a surge in natural gas demand, according to two separate studies in the journal Nature.

Climate researcher Fuu Ming Kai from the Massachusetts Institute of Technology's Singapore research center said in one study that methane output from rice fields in the Northern Hemisphere dropped during the period as fertilizers replaced manure and because of reduced water use.

"DuPont was ordered by the Environmental Protection Agency on Thursday to stop selling and recall its Imprelis herbicide, following thousands of complaints that the treatment kills trees."

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"A federal panel sketched out its first vision of a regulatory roadmap for the booming shale natural gas industry on Thursday, urging more transparency on the use of chemicals and more careful treatment of waste water."

"CHARLESTON, W.Va. -- West Virginia regulators should examine whether hundreds of additional abandoned coal mine sites need new water pollution treatment under a legal settlement announced last week, a member of a Department of Environmental Protection advisory committee said Wednesday.

Mining engineer John Morgan urged the Special Reclamation Fund Advisory Council to look into the matter in the wake of a deal between DEP and the West Virginia Highlands Conservancy to set pollution discharge limits at certain abandoned sites.

"The Obama administration on Thursday will pump $100 million into a little-known program that is going a long way toward redefining Everglades restoration.

The money won’t go to build reservoirs. It will go to ranchers.

"Ray C. Anderson, a leading green business advocate and founder of Interface, one of the world’s largest carpet manufacturers, died this week. He’d spent the last 17 years promoting the benefits of sustainable business practices, not only for protecting the environment but for boosting the bottom line."

"OTTAWA — The federal government's advocacy strategy to promote the oilsands sector in partnership with oil and gas companies and the province of Alberta was not just about polishing the industry's image and countering foreign climate change policies."

"Rick Perry’s likely entry int

"A devastating drought deepened over the last week in many areas, spreading through more of the Plains and going into the Midwest as triple-digit temperatures baked already thirsty crops and livestock."

"About two dozen environmental groups launched a volley of legal challenges at nuclear regulators on Thursday in an attempt to stall action to extend the operation of aging reactors and to delay construction of more advanced nuclear designs."