International

This small, flightless bird, native to an atoll in the Pacific, went extinct as a direct result of World War II.

It took a decade of hard work, but one of the world’s most important wildlife corridors is now emerging from the fragmented forests of coastal Brazil.

Chemicals collect in microplastics, which then get eaten by fish, birds and seals — and by humans.

As extreme weather conditions arrive, vulnerable people in migrating populations could find themselves at risk from sexual exploitation or forced labor.

Exhaustive searchers have failed to turn up the lost Algerian species Adenocarpus faurei. Could other plants in the region also be extinct?

Specialized environmental courts are now operating on every continent except Antarctica. What’s behind the boom?

Thanks to protective efforts in Russia, these critically endangered big cats have renewed hope of avoiding extinction.

In many Mexican cities, water is treated as a political bargaining chip – a favor that public officials can trade for votes, bribes or power.

Farmers don't like living near big predators like leopards, but new research shows the carnivores provide a vital ecological service.

Anyone who disregards the threats of climate change “is stupid,” says retired Lieutenant General John G. Castellaw.