"The benchmark American oil price fell below the symbolic $80-a-barrel threshold on Monday, swooning to two-year lows, after Saudi Arabia aimed to shore up its dwindling exports to the United States by cutting its selling price for the American market."

"In the largest-ever penalty for a violation of the Clean Air Act, the Korean automakers Hyundai Motor and Kia Motors will pay the federal government a combined $300 million as part of a settlement for overstating vehicle fuel-economy standards on 1.2 million cars, Justice Department and Environmental Protection Agency officials said on Monday."

"Governments can keep climate change in check at manageable costs but will have to cut greenhouse gas emissions to zero by 2100 to limit risks of irreversible damage, a U.N. report said on Sunday."

"CANBERRA, Australia — A bid by environmentalists to confront world leaders with a digital billboard highlighting climate change has been thwarted by Brisbane airport authorities who deemed the message too political."

"U.S. drivers will pay an average of less than $3 per gallon on Election Day, according to AAA."

"The Obama administration released thousands of pages on Friday documenting federal agencies’ vulnerabilities to climate change and what those agencies plan to do about it."

"Antarctic hole in protective layer of gas stands around same level as 2010, 2012 and 2013, but scientists say recovery is on track"

"Deal would allow US to join other countries in cutting carbon dioxide emissions but avoid having to obtain Senate ratification"

"Some rarer birds have grown in number over last 30 years due to conservation efforts while some well known species have fallen"

Gray wolves are coming back in the northern Rockies and Pacific Northwest. People have mixed feelings about wolves.