3dpchallenge
With its intense solar radiation and freezing temperatures, Mars isn't exactly paradise.On Sunday, NASA announced the winning designs for its 3D-Printed Habitat Challenge, a competition to imagine how we could survive in the harsh climate.
Only one team took home the $25,000 prize - for its triangular house built entirely from ice - but the other 29 finalists presented fascinating designs, too.
Some use autonomous robots to assemble the habitat. Some go deep underground. More than one uses cold fusion.
Few will be able to help humanity reach the red planet by the 2030s - one of NASA's primary goals. But they do highlight how complex it will be for humans to arrive and live there.
Keep scrolling to see our favorite designs.