Researchers have found PFAS in the bodies of wild animals everywhere they’ve looked. Now they’re beginning to understand the health effects.

This year we bid farewell to two lost frogs, the Chinese paddlefish, a plant from New Hampshire, and many others.

This will be a critical year for several endangered and threatened species, as well as a time of opportunity for others.

Human activities have put the ocean in serious trouble. A bold, Rights of Nature-based proposal aims to turn the tide.

This nature haven, an important area for marine mammals, is losing its luster as developments come at a price to the ecosystem and wildlife.

Researcher Deborah Giles is on the frontlines of efforts to understand — and help protect — critically endangered Southern Residents.

Warming temperatures, stronger storms and rising seas present a cascade of challenges that researchers are racing to understand.

Erica Cirino’s new book, Thicker Than Water, examines the plastic pollution crisis — and its solutions — from oilfield to landfill.

A new surveillance system tracks trends in wildlife illness and death and could help keep people healthy.

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