In some parts of Ethiopia, finding potable water is a six-hour journey. People in the region spend 40 billion hours a year trying to find and collect water, says a group called the Water Project. And even when they find it, the water is often not safe. A possible solution: a new product called Warka Water, an inexpensive, easily-assembled structure that extracts gallons of fresh water from the air. By Tuan Nguyen. Read more.