"A contingent of powerful U.S. representatives are pressing the chief executives of six of the country's largest fossil fuel companies, including ExxonMobil, Chevron and Shell, to answer questions about when the companies first understood that burning fossil fuels drives climate change and whether they became active partners in an effort to downplay the harm that could result."

"A months-long investigation shows how the energy giant pressured the Interior Department during the company's gung-ho Arctic push—and got most of what it wanted (except oil)."

"Last May, four months before the oil giant Royal Dutch Shell suspended exploration in offshore Alaska, Christopher Putnam needed to get something off his chest.

"An undercover sting by Greenpeace has revealed that two prominent climate sceptics were available for hire by the hour to write reports casting doubt on the dangers posed by global warming."

Environmental policy riders are one of the bones of contention stalling a massive omnibus funding deal in Congress as the December 11 government shutdown deadline looms.

"WASHINGTON — The bazaar is open on Capitol Hill as lawmakers rush through unfinished budget business.

Congress is trying to wrap up its work for the year and it's hoping to go out with a bang by passing a massive spending bill and a separate measure reviving a boatload of tax breaks that mostly reward business interests like high-tech firms and producers of renewable energy.

"The party is in talks with Republicans to lift a longtime ban on U.S. exports in exchange for clean-energy and other tax breaks."

"To be a climate change skeptic in Paris this week means facing heavy odds."

"LE BOURGET, France -- President Obama's top advisers have arrived in force here today to begin a final push toward a global climate accord, telling whoever will listen that U.S. carbon emissions reductions are here to stay."

"Democratic presidential hopeful Bernie Sanders released a climate and energy plan on Monday, calling for the U.S. to reduce its greenhouse gas emissions 80 percent by 2050."

"About 600 scientists and engineers, including former employees of the National Oceanic and Atmospheric Administration (NOAA), have signed on to letters urging the head of that agency, Kathryn Sullivan, to push back against political interference in science."

"Until fairly recently, Jonathan Lundgren enjoyed a stellar career as a government scientist. An entomologist who studies how agrichemicals affect the  ecology of farm fields, he has published nearly 100 articles in peer-reviewed journals ....  But recently, things have changed. His work has 'triggered an official campaign of harassment, hindrance, and retaliation' from his superiors, Lundgren alleged in an official complaint filed with USDA scientific integrity authorities last year."