"Oklahoma regulators are imposing new restrictions on energy companies injecting wastewater underground, in the latest effort to stem a sharp increase in earthquakes."

"MOSCOW -- Russia said on Tuesday it has resubmitted a claim to the United Nations for some 1.2 million square km of the Arctic shelf, a drive to secure more of the mineral-rich region where other countries have rival territorial interests."

"To comply or not to comply. That’s the question now facing Texas officials regarding the Obama administration’s ambitious Clean Power Plan. The sweeping regulatory initiative, unveiled [Monday] in its final form, aims at transforming the nation’s electricity-production system to slash emissions of climate-disrupting air pollution."

"Top Republican presidential candidates blasted the Obama administration’s landmark climate rule for power plants."

"The bankruptcy filing by Alpha Natural Resources comes on the same day that the Obama administration released its Clean Power Plan, which calls for more reliance on renewable energy sources."

"California water quality regulators have asked state Attorney General Kamala Harris to consider enforcement action against the owner of an oil pipeline that ruptured near Santa Barbara in May, spilling petroleum onto beaches and the Pacific Ocean."

"A device commonly used to measure the methane that leaks from industrial sources may greatly underestimate those emissions, said an inventor of the technology that the device relies on."

"In the strongest action ever taken in the United States to combat climate change, President Obama will unveil on Monday a set of environmental regulations devised to sharply cut planet-warming greenhouse gas emissions from the nation’s power plants and ultimately transform America’s electricity industry."

"Europe’s offshore wind power industry has set a record for its biggest ever year just six months into 2015."