To anticipate the impacts of a historic river restoration, we need to understand how salmon, bats, insects, algae and other parts of the ecosystem are behaving today.

A growing movement across the continent is working to remove thousands of barriers and restore some of the world’s most fragmented rivers.

Humble ponds have a key role to play in fighting climate change and aiding conservation — but only if we protect them.

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

Human activities have imperiled our waterways — along with almost one-third of freshwater fish and many other aquatic species.

Removing dams is one thing, but thousands of levees also restrict rivers in the United States — and they’re not working as intended.

Mounting studies highlight greenhouse gas emissions from reservoirs, and now a coalition of environmental groups has called for regulatory action.

Water releases from dams aren’t that good at mimicking natural conditions, a new study finds.

Wetlands can help remove nutrient pollution causing low-oxygen “dead zones.” But how much benefit we reap depends a lot on placement, a new study finds. 

A rise in container-ship accidents adds to the growing marine plastic pollution problem and poses risks to ocean health, wildlife and mariners.