We have five questions for teenagers Carter and Olivia Ries, founders of One More Generation and the One Less Straw campaign.

Using birds to help get rid of pests is proving to be more effective than poisons — and less expensive.

Eco-books coming out this month also look at the Flint water crisis, the effects of sea-level rise and the history of radical environmentalism.

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.