Wastewater exposes plants and wildlife to hundreds of chemical compounds. Researchers are learning about potential side effects and solutions.

Most of the world’s countries support these global agreements on conservation and pollution, but the United States is noticeably absent.

A new study identifies threats facing dozens of bat species in areas of the world that are predicted to get hotter and drier.

Plus what Maine did right (and wrong), billionaires in space, and rebranding invasive species.

Credit-rating agencies say they can discipline companies that behave badly, and they have in some cases, but research reveals negligible progress.

The charismatic animals could serve as flagship species for ocean conservation, according to researchers, but only if we understand their extinction risks.

The deadliest weather event is often the most overlooked.

The Western drought has exacerbated a water crisis, years in the making, that threatens the health of millions of birds — and so much more.

The month’s best (and worst) environmental news, along with other stories, science and context you don’t want to miss.

The American West contains 620,000 miles of fencing, threatening the migration of pronghorn, mule deer and other species.