Scaled down, martian model habitat rises again in desert

September marks the 30th anniversary of the beginning of the 2-year Biosphere 2 closed habitat experiment. While that experiment9s scientific findings have been overshadowed by high-profile crew conflicts and technological failures, a more modest attempt to simulate a Martian habitat is just beginning inside a test module originally built for Biosphere 2. The researchers behind the Space Analog for the Moon and Mars (SAM) aim to have a smaller,...