Sea urchins face extinction worldwide due to a deadly "pandemic" beneath the waves, warns new research. Scientists say the ...

Thousands of glaciers have vanished over the past few decades and as the world continues to heat up, they are expected to disappear at an increasing pace. New research gives a glimpse of just how quic ...

Sixty-six million years ago, a single asteroid hit Earth in the Yucatán Peninsula and killed off the dinosaurs. The disaster was local, but its effects were planetary. How can a regional calamity have ...

One of the oldest unsolved riddles in planetary science concerns the origin of the moon. Over a century ago, George Darwin ...

Nearly all life that ever existed on Earth eventually disappeared. Five known mass extinctions wiped out up to 96 percent of ...