Giant river otter returns to Argentina after almost four decades

Bangladeshi village grapples with contaminated water flowing in from India

‘We thought we’d got the numbers wrong’: Holloman Lake is a birder’s paradise – and has the highest levels of ‘forever chemicals’ on record

Tracking the return of critically endangered turtles in India’s Ganga River

Indigenous divers on Chile’s island restore seabed to protect seafood sources

What sharks are worth—and why that matters

Some rivers have rights, but author Robert Macfarlane argues they’re also alive

Overfishing has caused cod to halve in body size since 1990s, study finds

The ocean is in crisis. A new effort is betting on coastal communities to save it.

UN Ocean Conference makes progress on protecting marine waters