In the face of a changing climate and the challenges that come with it, companies the world over have been attempting to pull solutions out of thin air - literally. There are firms turning air into fuel and others transforming it into stone. Some are even extracting clean drinking water from it. Israel's Water-Gen has built devices that create and store drinking water by harvesting condensation from the air. It was among a group of Israeli firms that presented their technological innovations at the United Nations General Assembly last week. "Put simply, [our technology] leverages the same process as a dehumidifier, but instead captures and cleans the moisture," said Arye Kohavi, Water-Gen's CEO. "This 'plug-and-drink' technology is fully independent of existing water infrastructure. All we require is an electrical outlet and the humidity found in the air." Water-Gen isn't the only company to market such a technology, but it says its machines ... are far more energy-efficient than any other water production device. "Our technology takes one-fifth of the amount of energy used by other methods," Kohavi said. Water-Gen estimates the water its machines generates would cost less than 10 cents per gallon. The smallest device can yield up to 5 gallons daily, while the largest can produce more than 800 gallons a day. "We think it's possible to bring drinking water to all countries," Maxim Pasik, Water-Gen's chairman, [said] in an interview. "What's important for us is to bring water to the people. This is a basic human right."