The Week in Pictures: Jule 19 – Jule 26, 2014. Part 4/5

Engineer Daniel Schubert holds lettuce at the German Aerospace Center in Bremen, on Jule 21, 2014. Scientists and engineers from the German Aerospace Center are developing greenhouses for a potential Mars colony. The greenhouses will contain combined life-support systems which use recycled urine to manufacture fertilizer, helping to grow vegetables for a lunar and Mars environment. The first greenhouse will be tested for nine months in 2016/17 in an inhospitable environment in the Antarctic. (Photo by David Hecker/Getty Images)
The Week in Pictures: Jule 19 – Jule 26, 2014. Part 4/5
   
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