Environmental Protection Agency (EPA)

Emphysema is considered a smoker's disease. But it turns out, exposure to air pollution may lead to the same changes in the lung that give rise to emphysema.

A mining company says it won't carry out cleanup work ordered by the U.S. Environmental Protection Agency as part of a Superfund project in southwest Colorado.

The Durango Herald reported Wednesday that Sunnyside Gold Corp. sent the EPA a letter saying the company isn't responsible for pollution flowing from inactive mines in the area.

The U.S. Environmental Protection Agency will take the first major steps this summer to clean up wastewater flowing from dozens of old mines at a Superfund site in southwestern Colorado, officials said Thursday.

The work includes dredging contaminated sediment from streams and ponds, diverting water away from tainted mine waste piles and covering contaminated soil at campgrounds.

A company that makes dicamba-resistant soybeans and cotton wants to expand use of the controversial weed killer to corn. But critics and experts questioning the logic of the petition.

Several members of a powerful science panel for the Environmental Protection Agency expressed doubt at a hearing Thursday about the long-established scientific consensus that air pollution can cause premature death.

The panel was meeting to consider recommendations that would fundamentally change how the agency analyzes the public health dangers posed by air pollution and could lead to weaker regulation of soot.

Waterkeeper Alliance Inc. / Flickr

A report out Monday from environmental groups looked at groundwater contamination from coal-fired power plants. Three of the worst sites are located in the Mountain West.

Coal ash is the solid waste leftover when you burn coal. It often gets mixed with water and washed into a pit — an ash pond. If the base of a pond isn’t properly sealed, pollutants in the mix can make their way into groundwater.

Andrew Joyce won’t be growing any tomatoes this summer. His three-acre produce farm in Malden, Missouri, will lie fallow. The cause: damage from the weed killer dicamba.

U.S. Environmental Protection Agency

A gold company said the U.S. Environmental Protection Agency is mismanaging the Superfund cleanup of nearly 50 old mining sites in southwestern Colorado and should be removed as the agency in charge.

Sunnyside Gold Corp., which owns mining property in the Bonita Peak Superfund district, made the complaint Monday in a letter to the EPA. In a written statement Tuesday, the EPA said it is following Superfund laws and is conducting a thorough investigation and cleanup.

The environment is not typically a top issue for American voters.

But this has not been a typical year.

Christina Spicuzza / Flickr

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

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