The Bill and Melinda Gates Foundation is literally changing the world. They are doing wonderful things to raise the standard of living for impoverished people and nations. From helping eradicate diseases to improving literacy rates, it is one of the best charities out there.
One thing they are also working on is finding clean, potable water for people in third-world nations. One solution they have is really freaking gross.
It is called the Janicki Omniprocessor, which turns people shit into people drinking water.
Here is a video explaining the machine, and at the end, Bill Gates drinking a glass of water that was poop five minutes ago.
[H/T Laughing Squid]