I think most people’s first answer to this question would be… uhh, no! Would you drink water that came from human waste?
Bill Gates did… He has invested in a machine called the Janicki Omniprocessor, which turns sewer sludge into water, electricity, and sterile ash that can be used for fertilizer. Ge this – it only take 5 minutes to turn the waste into water.
Now as gross as this may sound for us… More than 2.5 billion people in the world don’t have access to clean drinking water. So this is a huge invention!