Water wells close to natural-gas operations in Pennsylvania were more likely than others to be contaminated with dissolved methane and other gases, researchers found.
In his big climate speech, Obama says the Keystone XL pipeline won't be in the nation's interest if it markedly worsens climate pollution.
An unforgiving article in Foreign Policy magazine describes Prime Minister Stephen Harper's reckless pursuit of oil-sands wealth.
America's most contaminated nuclear site appears to have sprung another leak, just five miles from the Columbia River.
Somebody uprooted GMO sugar beet plants, and the FBI is in hot pursuit. But it's not concerned about the illegal Monsanto GMO wheat that popped up in a field recently.
The agency is investigating the risks posed to drinking water by fracking. It was supposed to be done in 2014, but now it says it'll be two years late.
John Kerry's speech coincided with deadly flooding in India that's being blamed on climate change. But some Indian enviros didn't appreciate his preachy tone.
Gay-rights activist Dan Savage compares climate deniers to gay men in the early '80s who refused to face up to the reality of AIDS.
The president is gearing up for a big speech in which he'll unveil his second-term climate plan. The centerpiece: cracking down on coal power plants.