Rivers began pumping weathered material into the sea about a billion years after Earth formed, suggesting continents may have gotten an early start.

Ancient lead pollution in the Aegean Sea may have started 5,200 years ago — 1,200 years earlier than previously thought.

"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

Challenging centuries-old assumptions about thermodynamics, a new study in published in Physical Review Letters has shown ...