Water conservation is a growing concern globally, and particularly for farmers in the USA, where decades of irrigating huge fields has depleted vital resources of fresh surface water and groundwater. An ESA spin-off that can help to preserve water supplies while guaranteeing crop irrigation is now undergoing final testing. http://www.esa.int/Our_Activities/Space_Engineering_Technology/TTP2/Novel_use_of_satnav_saves_precious_water
