"President Barack Obama's re-election campaign sought to manage fallout on Thursday from his decision to nix a new oil pipeline, putting up its first television ad of 2012 to promote his energy record."

"When it comes to the fate of the 1,700-mile Keystone XL pipeline, proponents and foes agree that the fight did not end with President Obama’s decision Wednesday to reject the pipeline’s permit application. The question is how the battle will be waged in the months to come."

"So much for embracing climate science as a Republican presidential candidate in 2012. The demise of Jon Huntsman's White House hopes leaves GOP climate moderates without a champion in the remaining Republican field, especially given front-runner Mitt Romney’s efforts to convince global warming skeptics that he’s one of them. And that raises questions about how the party’s eventual nominee will fare with science-minded voters against President Barack Obama in November."

"DETROIT — Writing new regulations that will require cars and trucks to have significantly higher fuel economy by 2025 prompted years of fighting among automakers, environmentalists, regulators and consumer groups. But now that the standards have been proposed, nearly everyone involved in the process is on board with the results, as a public hearing held Tuesday in Detroit showed."

"President Obama, denouncing a 'rushed and arbitrary deadline' set by congressional Republicans, announced Wednesday that he was rejecting a Canadian firm's application for a permit to build and operate the Keystone XL pipeline, a massive project that would have stretched from Canada's oil sands to refineries in Texas.

"President Barack Obama's jobs council called on Tuesday for a corporate tax overhaul, expanded domestic drilling and new regulatory reforms, a set of proposals unlikely to provide a quick fix for high unemployment or gain much traction in an election year."

"Prominent MIT researcher Kerry Emanuel has been receiving an unprecedented 'frenzy of hate' after a video featuring an interview with him was published recently by Climate Desk.

Emails contained 'veiled threats against my wife,' and other 'tangible threats,' Emanuel, a highly-regarded atmospheric scientist and director of MIT’s Atmospheres, Oceans, and Climate program, said in an interview. 'They were vile, these emails. They were the kind of emails nobody would like to receive.'

"The longtime head of the citizens advisory committee that has oversight of the state's parks and forests was fired Friday by the Corbett administration, a termination that council members say was illegal and raises concerns about reduced public accountability of Marcellus Shale gas drilling in state forests."

"The Commerce Department agency that oversees everything from daily weather forecasts to storm warnings, climate monitoring and fisheries management would be transferred to the Interior Department under an ambitious plan of government consolidation announced by the president [Friday].

In an address, President Obama proposed merging six government agencies that primarily oversee business and trade into one, a move designed to 'help businesses grow, save businesses time and save taxpayer dollars.'

"Some states have introduced education standards requiring teachers to defend the denial of man-made global warming. A national watchdog group says it will start monitoring classrooms."