Pollution

We mapped light pollution from oil and gas fields and found they outshine American cities — and that's bad news for birds.

The U.S. Department of Agriculture killed more than 23,000 beavers last year. There’s a better way to manage our ecosystem engineers.

Specialized environmental courts are now operating on every continent except Antarctica. What’s behind the boom?

In many Mexican cities, water is treated as a political bargaining chip – a favor that public officials can trade for votes, bribes or power.

Dozens of these water-filtering species are at risk of vanishing, and that’s bad news for every living creature that relies on them.

The Trump administration is backing away from treaty mandate to “give preferential attention to the solution of all border sanitation problems.”

State regulators tried to get the future president to address problems on two golf courses. They got a lesson in how he handles regulatory challenges.

With environmental regulations under attack and EPA budgets being slashed, can the destruction of the agency be prevented?

Mystery untreated sewage appears in Mexico just across the border from an Arizona wastewater-treatment plant, city official says.

Ecotourism brings valuable funds for conservation to the islands, but it also delivers a torrent of garbage that could damage this unique ecosystem.