"CHEYENNE - The U.S. Environmental Protection Agency announced Thursday for the first time that fracking - a controversial method of improving the productivity of oil and gas wells - may be to blame for causing groundwater pollution."

"WASHINGTON — The issue may be dust in the wind, but Republicans are still moving to block it. Environmental Protection Agency officials have said — over and over again — that they won't propose new regulations to limit dust kicked up by farm equipment. But anti-regulation sentiment is strong this year on the campaign trail, and real or not, House Republicans are planning to vote this week to prevent such regulations."

"Stephen Harper heads to the White House on Wednesday to unveil a long-awaited border security agreement with U.S. President Barack Obama, but the visit comes at a particularly tense moment in Canada-U.S. relations as TransCanada's Keystone XL pipeline saga rages on."

GOP presidential candidate Jon Huntsman told conservatives Tuesday that he had doubts about the consensus science on manmade climate change -- science he once believed in. He is only the latest GOPer to flip-flop on science. There was a time when Republicans "believed" in science and cap-and-trade was a Republican invention.

"DENVER -- Colorado regulators decided Monday night to wait a week before they start deliberating a proposal to require oil and gas companies to publicly disclose what chemicals they use in hydraulic fracturing."

"The federal government's strict new rules on mercury emissions are a pro-life issue that Christians should embrace to protect unborn children, according to a group of Christian environmentalists."

"BP Plc. accused Halliburton Co. of destroying evidence that the oilfield services company did inadequate cement work on the Gulf of Mexico oil well that blew out last year, and asked a federal judge to punish Halliburton."

"A California electric car maker that announced Friday that it was shutting its doors earned the support of a pair of Republican lawmakers who are at the center of the political battle on Capitol Hill over the Department of Energy's renewable energy loan program."

The gas drilling boom is making at least one congressman rich.

GOP presidential candidate Newt Gingrich, who once thought climate change was man-made and required action, has changed his position. He now denies the scientific consensus.