Earth may not have always been the “blue planet.”

The equation appears to predict the fall of the Berlin Wall and the longevity of Stonehenge.

Plus: which supplements actually work, and is high-fiber all it’s cracked up to be?

A trio of marsupials has also fallen into extinction.

We thought hippos went extinct in Central Europe around 115,000 years ago, but new fossil finds tell a…

We promise that’s actually its nickname and that we’re not dishing out a playground insult.

The Hubble Space Telescope has returned to study this absolutely bizarre galaxy.

The dead satellite is supposed to remain in the geostationary belt around 40° East, yet it’s mysteriously drifted…