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

A union representative for the employees is objecting to a survey in which the workers must now disclose if they signed the ...

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

EPA plans to reverse endangerment finding, a foundation of the federal government's ability to address climate change.

"The expected outcome of the revised arsenic cleanup level will result in an estimate of four additional properties that need to be addressed," the document reads.

As the last coal plants in Colorado shut down, nuclear power proponents are campaigning to replace them with nuclear reactors ...

North Dakota's largest coal plant could help power a new industrial park just a few years after financial issues almost led to the facility's closure.