"The new, freewheeling Senate of Majority Leader Mitch McConnell presided over an agitated debate on the Keystone XL pipeline that churned into Friday’s wee hours and ended with aggrieved Democrats crying Koch."

"WINNIPEG, Manitoba — Hillary Rodham Clinton on Wednesday declined again to take a position on the Keystone XL pipeline, telling an audience in Canada that she would not express her views because of an ongoing review by the State Department."

"A county's ban on hydraulic fracturing and drilling conflicts with both state and U.S. law, a federal court in New Mexico found this week."

"What's the best way to drill for oil in a mostly untouched Alaskan tundra, home to migrating caribou, abundant waterfowl, and Native Alaskan hunting and fishing grounds? It depends on which federal agency you ask."

"President Obama is tapping Brian Deese, the deputy director of his budget office, to replace veteran aide John Podesta when he departs the White House next month."

"President Obama on Wednesday signed an executive order establishing a new panel that will advise the federal government on preserving the Alaskan Arctic."

"Vapor produced by electronic cigarettes can contain a surprisingly high concentration of formaldehyde — a known carcinogen — researchers reported Wednesday."

"Specialty crop farmers were at the [Iowa] capitol today complaining of damage to their produce from pesticide drift."

"A second large oil spill into Montana's Yellowstone River in less than four years is reviving questions about oversight of the nation's aging pipeline network."

"Nearly 50 environmentalist organizations sent a letter Wednesday to every member of Congress, urging them to oppose granting President Barack Obama 'fast-track' authority to pass new free trade deals."