After frogs in protected area of Panama died off en masse, the snakes that ate them began to disappear, too. It shows the extent of our "biodiversity crisis."

Unless global warming declines, extinction is in store for as many as one-third Earth's species of plants and animals worldwide.

Underwater coral nurseries can do more than provide transplants for barren ocean areas. They can also offer a home to all kinds of threatened species.

Sea urchins boomed after a mysterious disease decimated sea stars off the California coast. Researchers say it shows how redundancy can protect ecosystems.

New findings show the value of preserving Earth's giants, such as elephants, whales, and sequoias.

A new map that tracks the genetic diversity of freshwater and marine fish offers another tool to protect species around the world.

In 10 years, urban expansion into undeveloped land will destroy almost 112,000 square miles of natural habitat—an area larger than the United Kingdom.

Genetic engineered bacteria in the guts of honey bees could pump out medicines to protect the bees against Varroa mites and deformed wing virus.

"What makes for an endangered species classification isn't always obvious," says John A. Vucetich. He's the coauthor of new research on where Americans would draw the line.

"The blob" is responsible for an unprecedented seabird die-off from California to Alaska in 2015 and 2016, say researchers who studied the common murres.