By Cat DiStasio
There are 1.2 billion people around the world do not have reliable access to fresh, potable water. That's why advancements in water purification technology are so important. Fortunately, there are a lot of innovative folks working on creative ways to solve water-scarcity issues by developing new techniques, maximizing efficiency and sometimes even producing drinking water from thin air. Read on for six of the world's most innovative water generators, from machines that collect H2O in the middle of the desert to a bike-mounted contraption that harnesses solar energy to collect water from the air as you ride.