An important cause for sure.
Bill Gates gets a potty mouth: foundation holds toilet reinvention fair | The Sideshow - Yahoo! News
Yet I couldn't help but get a chuckle after reading the last paragraph.
"Some of the ingenious ideas at the toilet fair include a Swiss system
for diverting some urine and recovering water for flushing, and a design from Stanford researchers
that turns human waste into charcoal. And a team from the Delft University of Technology in the the Netherlands invented a toilet
that turns human waste into fuel through microwave technology."
Hmmm..charcoal..what's the secret to the grilling this year dear?