In 2016, the competition asked designers to build a device that could extract at least 2,000 liters of water a day from the atmosphere, use clean energy, and cost no more than 2¢ a liter. From the competition came a shipping container that can use clean energy to extract clean waters out of thin air. The shipping container mimics the way clouds are formed: It takes in warm air, which hits cold air and forms droplets of condensation that can be used as pure driving water.