"Officials in Rick Perry's home state of Texas have set off a scientists' revolt after purging mentions of climate change and sea-level rise from what was supposed to be a landmark environmental report. The scientists said they were disowning the report on the state of Galveston Bay because of political interference and censorship from Perry appointees at the state's environmental agency."

"The U.S. Environmental Protection Agency said on Monday it will not tighten controls on dust particles on farms when it sends the rule to the White House for its regular five-year review."

"A government test used to measure the radiation people absorb from their cellphones might underestimate the levels to which most adults and children are exposed, according to a group of doctors and researchers whose stated mission is to promote awareness of environmental health risks they believe may be linked to cancer."

"A federal judge has thrown out a key section of an Interior Department rule that declared global warming is threatening the survival of the polar bear."

"In 2008, both the Democratic and Republican candidates for president, Barack Obama and John McCain, warned about man-made global warming and supported legislation to curb emissions. After he was elected, President Obama promised 'a new chapter in America's leadership on climate change,' and arrived cavalry-like at the 2009 United Nations Climate Conference in Copenhagen to broker a global pact.

But two years later, now that nearly every other nation accepts climate change as a pressing problem, America has turned agnostic on the issue."

"IOWA CITY -- Republican presidential hopeful Herman Cain has cast himself as the outsider, the pizza magnate with real-world experience who will bring fresh ideas to the nation's capital. But Cain's economic ideas, support and organization have close ties to two billionaire brothers who bankroll right-leaning causes through their group Americans for Prosperity."

"LONDON — Anadarko Petroleum Co. has agreed to pay $4 billion to BP PLC as part of a settlement related to last year's Gulf of Mexico oil spill."

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The Keystone XL pipeline that would bring petroleum from Canada's tar sands to US terminals in Houston is proving a political headache for President Obama. It pits many of his erstwhile allies -- such as unions and environmentalists -- against each other.

"House Republicans pushed through legislation Friday that gives the states the power to regulate coal ash from power plants as if it were municipal garbage, pre-empting pending federal regulations that could be much tougher."

EPA has charged a Maryland man with fraud in an alleged biofuels credit scheme, signalling a federal crackdown on fraud and abuse of the Renewable Fuels Standard.