'SlingShot' film focuses on Dean Kamen, water access


Inventor Dean Kamen is shown with the original, right, and revamped models of his Slingshot water purification system. 

The film "SlingShot" is both a biopic and an explanation of an invention that Kamen hopes can help free people in many countries from the burdens posed by unsafe drinking water.
CLICK TO VIEW THE SOURCE MATERIAL