For decades, many believed Mars was a dead world with no air. But that’s wrong. This is the real story of the Red Planet's ...

Billions of years ago, it rained on Mars. The water collected in valleys and rivers, filled and spilled over the rims of craters, and was funneled into canyons, perhaps even making its way to a large ...

Mars has long been framed as a cold, dry desert, but new research is revealing a planet laced with hidden ice and glacial ...