"Republican presidential candidate Jeb Bush on Tuesday proposed a sweeping rollback of federal regulations on the environment, Wall Street and other areas, saying a buildup of rules during the Obama administration has stifled economic growth."

"DES MOINES, Iowa – Democratic presidential front-runner Hillary Rodham Clinton declared opposition to the proposed Keystone XL pipeline on Tuesday, ending a long and politically uncomfortable silence on an issue that has become a touchstone for environmentalists and liberal voters."

"The greater sage grouse, a bird whose habitat is spread across 11 Western states, has been saved by collaborative conservation effort and won't be listed as endangered or threatened, the Interior Department announced Tuesday."

"A long-simmering debate in the American West over an imperiled ground-dwelling bird was headed for climax on Tuesday with the Obama administration expected to unveil a conservation plan lacking Endangered Species Act protections."

"For more than a year, Volkswagen executives told the Environmental Protection Agency that discrepancies between the formal air-quality tests on its diesel cars and the much higher pollution levels out on the road were the result of technical issues, not a deliberate attempt to deceive Washington officials."

"President Barack Obama’s nominee to lead the nation’s rail safety agency told lawmakers Thursday that the agency would hold railroads to a year-end deadline to install collision-avoidance technology even if it meant that freight and passengers could be left stranded."

"Regulators have been slow to act on paint strippers, other products containing methylene chloride".

"More than half the members of the U.S. Senate are urging chamber leadership to pass a bill reauthorizing a federal conservation program before it expires at the end of the month."