On the outskirts of Houston, four people have been living a version of the future that most of us only see in science fiction. For more than a year, they have been sealed inside a mock Martian base, ...

Mars planners are increasingly treating ice not just as a resource to drink or split for rocket fuel, but as a structural material that could shape the first real neighborhoods on another world.

A Mars base simulator sits in the middle of nowhere in China's Gobi desert, but instead of housing astronauts training to live on the Red Planet, the facility is full of teenagers. Surrounded by ...