<ul><li>NASA has unveiled a new Mars-simulation habitat in Houston, Texas, in which volunteers will live for a year at a time to test what life will be like on future missions to Mars.</li><li>The habitat, called "Mars Dune Alpha," includes four small rooms, a gym, and a lot of red sand.</li><li>It also has a vertical farm to grow salad, a room dedicated to medical care, an area for relaxing, and several workstations.</li><li>NASA plans to monitor the physical and mental health of volunteers to better understand resource use on Mars.</li><li>The habitat was 3D-printed, and NASA sees it as a potential technology for building habitats on other planetary or lunar surfaces.</li></ul>

From rooms to red sand, NASA unveils 'Mars' habitat on Earth

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