The idea of water flowing on the surface of Mars went out with the early 20th century astronomer Percival Lowell, who swore up and down — and incorrectly — that he could see canals on the Red Planet.

What is the amount of greenhouse warming required to heat up the cold climes of Mars enough so that trees can grow on the Red Planet? New research points to how much you’ve got to jack up the carbon ...

NASA is treating food as mission-critical hardware for Mars, designing future habitats where crops grow alongside ...