Some believe the Betz mystery sphere, a steel ball that a Florida family found on their property in 1974, is a piece of alien technology. Here’s the truth.

Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

Until now, scientists have only known about the animals from fossils. But they suspected the creatures might still be alive, ...

The pygmy long-fingered possum and the ring-tailed glider, until now known only through fossils, have been rediscovered.