The Obama administration is trying to encourage wind power, but some wildlife advocates say it's going too far.
Ocean acidification is dissolving even more pteropod shells than we thought.
The city stopped short of banning piles of petcoke, a tar-sands refining waste. Now activists and officials are trying to get rid of the piles with lawsuits.
Farm workers on sugar and rice plantations have been hit by a mysterious kidney ailment. Recent research suggests the herbicide glyphosate could be connected to the epidemics.
The same protestors who were jailed in Russia last year got themselves arrested once more, this time for trying to block an oil delivery to a Dutch port.
Meanwhile, the U.S. government still hasn't forced the railroad industry to get rid of the most dangerous, puncture-prone railcars.
Conservative-led states that are nowhere near the bay are fighting the EPA's plan to clean it up.
In a forceful speech during a science meeting, the EPA chief pointed out the blatant hypocrisy of some of the agency's most vocal critics.
Alaskan tundra was coated with a mist of oil and natural gas on Monday. The accident was a reminder of the folly of a massive pipeline proposal.