SlingShot

SlingShot focuses on inventor Dean Kamen and his 15-year quest to solve the world's safe water crisis.An eccentric genius with a provocative worldview, Kamen takes on grand-challenges one invention at a time, helping people in need. Half of all human illness comes from water-borne pathogens. Kamen's SlingShot is an energy-efficient machine that turns any unfit water (seawater, poisoned wells, river sludge...) into pure, safe water - no chemicals or filters needed. (slingshotdoc.com)