A collection of our best articles and essays about some the world’s most at-risk groups of species — and what we can learn from them.

Scientists have rediscovered the endangered Mindo glassfrog, which hasn’t been seen in decades. And it’s just one of many remarkable species they’ve found in an at-risk habitat.

New research indicates a growing online trade in porcupine bezoars — a ball of inedible material that sometimes gathers in their digestive tracks.

Thousands of plant and animal species are already shifting their ranges in response to a changing climate. Will they be welcome?

Wolves often get the blame for killing caribou in Canada’s boreal forests, but the real threat is human activity, new research finds.

Environmental, economic and political forces have converged, threatening to finally upend fossil fuel dominance.

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.

Australia’s Bellinger River snapping turtle nearly went extinct in just months — before anyone knew it was in trouble. Conservationists are working to make sure it doesn’t disappear forever.

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.

Areas with natural buffers from the effects of climate change could play a vital role in conservation efforts. New research helps to better understand them.