As we always say nothing is impossible. David Hertz along with his wife Laura invented something for which they won the $1.5 million Xprize. What they made was a Water Ambulance, which converts thin air into water. They only used shipping containers, wood chips and other detritus for making nearly 2 litres of water at just 2 cents per litre. The aim of the competition is to produce things to protect and improve earth.