"Democratic U.S. senators on Monday urged the Obama administration to reform the federal coal mine program to include costs of the fuel's carbon emissions and potentially raise royalties paid by companies that mine the fuel on public lands."

"The company sponsoring the controversial Keystone XL oil pipeline Monday asked the State Department to suspend the review of its federal permit application, a request that could push a final decision on the pipeline beyond President Obama’s tenure in office."

"President Obama’s environmental agenda hangs in the balance as federal courts consider whether his administration overstepped its authority in drafting a host of regulations designed to combat pollution and climate change."

Conservatives and evangelical Christians are making a case for clean energy. Will it become a movement?

"The top oil and gas lobby group is launching a new advertising campaign against the federal ethanol mandate."

"A six-month investigation finds that the revolving door between government and private industry has led the EPA to rely on potentially skewed research."

"Wildfires crackled across Siberia this summer, turning skies ochre and sending up enough smoke from burning pines to blot out satellite views of the 400-mile-long Lake Baikal."

"A prominent Agriculture Department scientist is alleging that he was suspended after complaining that the agency was blocking his research into the harmful effects of pesticides on pollinators, such as bees and butterflies."

"Democratic presidential candidate Hillary Clinton has joined the ranks of politicians and environmentalists calling for a federal investigation of ExxonMobil."

"A dozen Buddhist authorities, in what they're calling an unprecedented effort, appeal to world leaders to take strong climate change action at next month's Paris conference."