Unemployment, inflation and GDP growth will be worse this year than projected, budget office says U.S. issues Nepal warning ...

A biosignature is any characteristic, element, molecule, substance or feature that serves as evidence for past or present ...

Mars, Europa and Enceladus are the three most promising locations in the solar system to search for life living off cosmic rays.

Earth may not be the only place in our solar system with life, says James Green. New data shows life might have existed on Mars, and could exist now. But what does that mean for us on Earth? Lisa ...

A new book explores how Americans came to believe in an advanced Martian civilization at the turn of the twentieth century.