And it reveals a big problem with the nation’s approach to saving endangered species.

Why do beaches today have seashells from clams and snails instead of brachiopods? A new study suggests the answer lies in ...

Experts scour the Sacramento Mountains for the endangered checkerspot butterfly, last seen in the wild in 2022. Is it gone ...

A Stanford-led study has provided the strongest evidence yet that warming oceans and declining oxygen levels caused Earth's ...