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A gold company said the U.S. Environmental Protection Agency is mismanaging the Superfund cleanup of nearly 50 old mining sites in southwestern Colorado…

Democrats are making Trump's environmental rollbacks and climate denial a big issue in swing races this fall. If they take the House, they plan lots of oversight hearings and tough questions.

The Environmental Protection Agency is making $20 million available for states and tribes to voluntarily test drinking water for lead at schools and…

In early August three years ago, Barb Horn stood along the banks of the Animas River in the city of Durango, Colorado. Word had spread of a mine waste…

A study in the journal Science says a lot more methane is leaking from oil & gas sites than previously thought -- about 60 percent more than the current…

The U.S. Environmental Protection Agency has come up with an interim plan to hold back some of the toxic heavy metals that spill into rivers from old…

Environmental Protection Agency leader Scott Pruitt made a quiet visit to Boise Tuesday, to sign a new agreement between his agency and the state of Idaho.

Voices continue to mount against the Trump administration's plan to lease land for oil drilling near the Great Sand Dunes National Park and Preserve in…

The Environmental Protection Agency on Tuesday signed a proposal to repeal the Clean Power Plan — President Obama’s signature climate change legislation.…

TransCanada, the company behind the Keystone XL oil pipeline, is scheduled to go before the Nebraska Public Service Commission next week, the final...