There is a porject gaining ...
Published by Marc Beckett, Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB
There is a porject gaining momentum in the Sahara desert in Southern Algeria. The people using the hydroponic system are growing barley (no need for nutrients) within 7 days to feed their livestock (http://innovation.wfp.org/project/hydro-sahrawi-algeria)