In the midst of climate change, awareness of humanity’s negative impact on the planet has grown, making the idea of moving to another planet more appealing. This led to the concept of Biosphere 2, ...

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

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

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

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 ...

Until recently, Mars was studied only through telescopes and some data that was recorded from early spacecraft. It was thought that Mars' polar regions were the only significant reservoirs of ice, ...