"BOARDMAN, Ore. -- A new link in the world's future energy supply could soon be built here on the Columbia River, and it would have nothing to do with the vast acres of wind turbines or the mammoth hydroelectric dams that give this region's power sources one of the cleanest carbon footprints in the nation."

"The company planning the disputed Keystone XL oil pipeline has proposed a new route through Nebraska that avoids the state's environmentally sensitive Sandhills region."

"In one of the least-shocking political developments of 2012, four major environmental groups simultaneously endorsed President Obama's reelection bid Wednesday."

"In 2006, developers, mining companies and agribusinesses convinced the George W. Bush administration to scale back a proposal that would have widened federal protections for wetlands and waterways in the wake of a muddled Supreme Court ruling on Clean Water Act enforcement."

"LOUISVILLE, Ky. -- Black dust from the giant coal ash heap across the street from Kathy Little's Louisville home swirls in the wind, coating her windows, her car, and blows indoors to settle on the furniture. The ash blanketing Little's property is a byproduct of a nearby coal-burning power plant. Since it's full of fine particles of arsenic, chromium and other metals, the U.S. Environmental Protection Agency is considering classifying the ash as a hazardous material."

"WASHINGTON -- Oil and gas companies will have to capture toxic and climate-altering gases from wells, storage sites and pipelines under new air quality standards issued on Wednesday by the Environmental Protection Agency. The rule is the first federal effort to address serious air pollution associated with the natural gas drilling process known as hydraulic fracturing, or fracking, which releases toxic and cancer-causing chemicals like benzene and hexane, as well as methane, a powerful greenhouse gas."

The New York Times' Felicity Barringer interviews Sierra Club head Michael Brune about environmental politics, money, and President Obama.

"President Barack Obama pushed Congress Tuesday to give oil market regulators more muscle to deter price manipulation by speculators, the latest White House response to determined Republican attacks on administration energy policies amid high gas prices at the pump."

"President Barack Obama will receive endorsements Wednesday from the Sierra Club, League of Conservation Voters, Clean Water Action and Environment America, according to an environmental political operative and a House Democratic source."