Both species were able to remain metabolically active throughout the tests. Related: Which animals will be the first to live ...

Mars is a hostile world for humans, but what about animals? Some species have extreme adaptations that could give them an unexpected edge on the Red Planet—far beyond human capabilities!

NASA's Curiosity Rover has discovered long carbon chains on Mars. On Earth, molecules like these are overwhelmingly produced ...

The much-needed ingredient still missing for humans and animals is oxygen ... On Earth, plants make the majority of the oxygen supply. On Mars there's a chicken-and-egg problem: the planet ...