The 15-acre sinkhole was caused by the collapse of a salt mine that served the petrochemical industry.
The number of bumblebees killed by a pesticide application in Oregon has risen to 50,000, and nature lovers are calling for stronger regulation of neonicotinoid insecticides.
An EPA rule cracking down on power-plant pollution that crosses state borders was struck down by a federal court last year. Now the Supremes will hear the case and could reinstate the rule.
Epic floods forced more than 100,000 people to flee their homes last week in Alberta, Canada, prompting questions about the link between climate change and flooding.
Climate activists are pushing a state ballot measure that would tax carbon emissions from gasoline, heating oil, and other fossil fuels.
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.
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.