"The White House on Tuesday said President Obama had no intention of bowing to a request from the company behind the Keystone XL oil pipeline to delay a decision on the project, saying he wanted to take action before his tenure ends."

"The Environmental Protection Agency said on Monday that it had discovered emissions-cheating software on more Volkswagen and Audi cars than previously disclosed and, for the first time, also found the illegal software in one of the carmaker’s high-end Porsche models."

"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."

"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."

"Federal regulators on Friday proposed a zero-tolerance policy for food-borne residues of a pesticide widely used on edible crops nationwide, effectively ending its application to more than a dozen crops, including tree nuts, soybeans, corn, wheat, apples and citrus."

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

"Lawmakers have introduced legislation that if passed this week could avoid a potential rail service disruption resulting from a year-end safety deadline few railroads are expected to meet."

"The U.S. Department of Agriculture on Friday signed off on a new genetically modified type of corn developed by Monsanto Co after a review concluded it posed no significant threat to agricultural crops, other plants or the environment."