More frequent, longer-lasting blooms can harm both wildlife and human health — and even kill. Can we learn to predict and prevent them?

A river-restoration advocate looks back at her family’s forgotten history to gain new insight into the history — and future — of our country’s rivers.

A new report concludes U.S. waters “have insufficient protections for a healthy future,” and that the problem has gotten worse under the Trump administration.

You may not have heard much about the long fight to remove the Nooksack Dam near Bellingham, Washington, but its detonation this week will prove ecologically and culturally important.

Fish in the northern reaches of the planet are adapted to thrive in some of the most dynamic conditions, but new research finds that some species are showing decline.

Here’s why the action is so harmful, how it’s possibly illegal, and why it won’t help struggling fishing communities.

A new study took a deep dive into critical aspects of ocean life to identify the areas of the high seas most worthy of conservation effort.

A historic international treaty to protect marine biodiversity is currently being negotiated, but will it be strong enough to create reserves and boost conservation efforts?

We know a lot more now about the ecology of the Gulf of Mexico and the risks of deep-water drilling, but that doesn’t mean we’re any safer.

A new book from veteran author Mark Kurlansky explains why helping to save salmon is one of the best things we can do for ourselves and the planet.