"Seventy-five years have passed since the worst of the Dust Bowl, a relentless series of dust storms that ravaged farms and livelihoods in the southern Great Plains that carried a layer of silt as far east as New York City. Today, the lessons learned during that era are more relevant than ever as impending water shortages and more severe droughts threaten broad swaths of the nation."

"The drying up of the Aral Sea is one of the planet's most shocking environmental disasters, U.N. Secretary-General Ban Ki-moon said Sunday as he urged Central Asian leaders to step up efforts to solve the problem."

"Federal government scientists say a 'growing body of evidence' shows that mountaintop removal coal mining is destroying Appalachian forests and dangerously polluting vital headwater streams."

"FLAGSTAFF, Ariz. --  The challenges facing a proposed coal-fired power plant on the country's largest Indian reservation are stark: the withdrawal of a key federal permit, no secured customer or transmission line, and uncertainty over the future of climate change.

The Navajo Nation acknowledges the challenges, but both the tribe and its partner in building the $3 billion, 1,500-megawatt Desert Rock Energy Project say they are committed to moving forward. Environmentalists who have fought the project contend it will be nearly impossible to do so."

"Shell Oil has crossed another hurdle in its plans to drill three exploratory petroleum wells in the Arctic Ocean. The Environmental Protection Agency announced Thursday it had approved a clean air permit for Shell to operate its drilling ship in the Chukchi Sea off Alaska's northwest coast."

"CHEYENNE, Wyo. -- The federal government cleared the way for the expansion of one of the nation's biggest coal mines Thursday over the concerns of environmentalists who said the coal could contribute to climate change."

"The Obama administration on Thursday imposed strict new environmental guidelines that are expected to sharply curtail 'mountaintop' coal mining, a controversial practice that has enriched Appalachia's economy while rearranging its topography."

"The topmost peak of Ontario's most outstanding geologic feature, the Niagara Escarpment, is under threat from two proposed quarries. But now the quarriers must deal with the massed opposition of a national nonprofit organization, a provincial regulatory agency and two local community groups."

"An energy company with government approvals to launch the first significant U.S. oil sands project is trying to raise money to build a plant in eastern Utah that would turn out 2,000 barrels of oil a day."