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Snowpack in every part of Colorado’s high country is sporting layers of dust, according to a new statewide survey of the state’s winter accumulation.“This…

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…

A menace lurks beneath the snow high up in the southern Rocky Mountains.At first glance it seems innocuous, another piece of a dynamic alpine ecosystem,…

Last August, 3 million gallons of orange wastewater flooded into Colorado's Animas River, ending up in Lake Powell. But Congress has failed to come up with a way to stop this from happening again.

Gov. John Hickenlooper has formally requested that a set of abandoned mines above Silverton be listed as a Superfund site. The request comes nearly seven…

Carol and John Wagner’s ranch is surrounded by green pastures, with spectacular views of the northern San Juan mountains. The Wagners moved here from…

Say the names of these Colorado towns out loud: Silverton. Leadville. Silver Plume. Rico. Bonanza. Ironton. The last two are ghost towns, but the names of…

The Environmental Protection Agency has said it caused a large release of hazardous water from a mine above the town of Silverton, in Southwest Colorado.…