The EPA published a notice in the Federal Register that it intends to deny Colorado’s plan to shutter coal-fired power plants ...

Trump is challenging Colorado’s plan to shutter coal-fired power plants, showing a rift between federal and state priorities.

Mexico president says 14 Mexicans held in US detention center 'Alligator Alcatraz' ...

Environmentalists lamented the agency’s decision, but Colorado officials said it would have little impact on its planned ...

Colorado may be buffered from Supreme Court's EPA decision 02:21. In this day and age of climate change, a major blow has been struck against the U.S. agency whose very name says its job is to ...

The Environmental Protection Agency (EPA) announced Monday a settlement reached with Public Service Company of Colorado (PSCo) that will result in a $925,000 fine and requirements for increased ...

By the timeline the EPA set for burying carbon dioxide from coal and natural gas energy plants underground, or shutting fossil fuel generators altogether, Colorado will already have closed all its ...

GUNNISON, Colo.—The Environmental Protection Agency has ruled that Colorado’s air pollution permit for Arch Coal’s West Elk coal mine fails to meet Clean Air Act requirements for monitoring harmful ...

Greenhouse gases and noxious emissions from coal plants would increase under newly proposed Trump administration guidelines, the U.S. Environmental Protection Agency said Tuesday.

This story was updated at 6:25 p.m. EDT. EPA says a state-approved air permit for Colorado’s largest coal mine doesn’t fully comply with the Clean Air Act and regulators there must fix ...