We're Being Overprotective of Mars

Mars is a big boy. At 4.5 billion years old, the Red Planet can surely take care of itself by now—but you wouldn't know it based on the great lengths NASA and friends go to protect it from contamination by Earthly debris. Some astrobiologists think these measures are unnecessary. » 12/11/13 11:32am 12/11/13 11:32am

Curiosity Discovers a Giant Lake Once Suitable for Life on Mars

The possibility that Mars was once home to all kinds of life is looking better and better with each new Curiosity discovery. According to newly published research, the rover has stumbled across a site in the Gale Crater that scientists believe might have once been a lake full of life. » 12/09/13 3:22pm 12/09/13 3:22pm