China tests self-sustaining space station in Beijing

Sealed behind the steel doors of two bunkers in a Beijing suburb, university students are trying to find out how it feels to live in a space station on another planet, recycling everything from plant cuttings to urine. They are part of a project aimed at creating a self-sustaining ecosystem that provides everything humans need to survive. Four students from Beijing University of Aeronautics and Astronautics entered the Lunar Palace-1 on Sunday with the aim of living self-sufficiently for 200 days.