"Republican incumbent Rob Portman built a big lead in the polls over former Gov. Ted Strickland after flurry of ads painting the Democrat as anti-coal."

"President Obama’s signature effort to combat global warming was alternately lauded as a reasonable attempt to move the nation toward cleaner energy sources and faulted as an unconstitutional, job-killing power grab during seven hours of vigorous legal arguments Tuesday."

"U.S. President Barack Obama on Monday avoided direct mention of a pipeline that has provoked high-profile protests from Native Americans but urged tribal leaders to use the spotlight to continue pushing for recognition even after he leaves office."

The United States is likely to miss the goals it pledged to meet in the Paris climate agreement. One reason is emissions of methane, a potent greenhouse gas used in most homes.

"The Dutch parliament has voted for a 55% cut in CO2 emissions by 2030, which would require the closure of all the country’s coal-fired power plants."

"In Hollywood, films like “Deepwater Horizon” are not supposed to exist."

"The State Water Control Board unanimously approved a complex and expansive permit Thursday that will allow Dominion Virginia Power to drain millions of gallons of wastewater from the coal ash ponds at its Chesterfield Power Station, the largest fossil fuel plant in Virginia, then treat it and discharge it into the James River."

"Environmentalists are warning the Environmental Protection Agency (EPA) that its draft plan to continue allowing oil and gas companies to dump unlimited amounts of fracking chemicals and wastewater directly into the Gulf of Mexico is in violation of federal law."

"WINNIPEG, Manitoba -- Aboriginal tribes from Canada and the northern United States signed a treaty on Thursday to jointly fight proposals to build more pipelines to carry crude from Alberta's oil sands, saying further development would damage the environment."

"A handful of people among the list of mostly bankers and investors advising Donald Trump on the economy have taken positions on climate change and U.S. dependence on fossil fuels."