The tiny fish doesn’t reproduce well in years when the water doesn’t flow. Several bad years in a row could push the species closer to extinction.

Drought has already killed more than 100 wild horses. Volunteers hope to prevent more deaths.

Will the infamous EPA administrator get to keep his soundproof phone booth? And will anything change at the EPA itself?

With increased attendance and crumbling infrastructure, national parks need money. But President Trump wants to cut even more of their funding.

Conservationists have helped to save North America’s largest bird from extinction, but it’s still important to give every chick a chance to fly free.

YouTube is inspiring viewers across the globe to protect Hawaii’s Laysan albatross — but will that be enough in the face of climate change?

The Blue Marble is turning into a glowing globe – and in many places that’s becoming a problem for human health.

The fungus that causes white-nose syndrome continues its deadly spread west — but a meeting of bat researchers reveals cause for hope.

Atlantic salmon from Norway carry a dangerous disease that puts native Canadian fish at risk — and maybe those in the United States, too.

New research shows that 2,000-year-old baobab trees are suddenly dying. New trees won’t have a chance, either.