The monarch butterfly population in the eastern United States has declined sharply — an estimated 80% loss since the 1990s. Among the factors contributing to the decline: Loss of habitat, exposure to ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Deinosuchus had a wide snout like an alligator’s. But unlike alligators, it thrived in salty waters. It lived between 82 and ...