Bill Gates posted a video about an initiative he funded to create a machine that turns human waste into clean drinking water and electricity.

And, in order to prove that he believes in the results, he actually drank some of the purified water.  Well, sort of.  It looks as though he took about the tiniest sip humanly possible.  In fact, you can probably make the case that he just wet a small portion of his top lip with the water.

But don't get me wrong, Gates' philanthropic ventures are to be commended.  And this new machine could change the world.  I just wish the rest of the world's multi-gazillionaires were as benevolent.