Les Hall is a man who always said he wanted to 'make the world a better place.' Well, he may have found a way to do this. Hall has uploaded a 3D printable water purification device to Thingiverse, and is asking the community for your help in improving his invention. There are currently 783 million people in the world who lack access to clean drinking water. That's 783 million too many. Please feel free to download the Thingiverse model and make changes, then either post them here, discuss them, or upload your own to design Thingiverse.

Thingiverse link: http://www.thingiverse.com/thing:464463
More details on Les and this Invention: http://3dprint.com/15917/3d-printed-water-purification

Video of Les: