Big-nosed giant guitarfishes and wedgefishes are now the most endangered marine fish group. Will the international community step up to protect them from trade and exploitation?

Changes to regulations about critical habitat and consideration for economic interests threaten to upend more than 45 years of conservation success. But the worst may still be to come.

To keep pace with environmental loss, scientists working to restore tropical reefs have turned their attention to coral reproduction and increasing diversity.

Releasing captive-bred monarchs doesn’t benefit wild butterflies — in fact, it may make the problem worse.

The Australian icon could lose its fight against climate change, disease, habitat destruction and cars — but not if dedicated conservationists get the tools they need to protect the species.

Many of the gray whales found dead this year have suffered from malnutrition. Researchers are rushing to find the cause.

Images of chimpanzees and other species appear cute, but they may actually depict animals in dangerous situations. Here’s how to tell what’s safe to share — and how that helps conservation.

Residents of southern Arizona are protecting jaguar habitat and creating jobs in the hopes that a restoration economy can beat an extraction economy.

Massive traditional fish traps called fish fences catch hundreds of types of fish — many before they’re old enough to reproduce.

Marine protected areas can benefit sharks and other oceanic species — but only if they’re properly established, according to a new guidebook.