Everybody poops! Engineer Cho Jaeweon thinks the waste people flush down the toilet is worth paying for. He recently invented the BeeVi, a toilet that turns waste into energy!
The toilet is installed at a university in South Korea. The toilet sends human waste to a tank under Cho’s lab. There, tiny organisms called microbes turn it into a gas called methane. That gas is used to power stoves and hot water heaters at the university. Using methane for energy creates much less pollution than burning coal or oil does.
In return for their poop, BeeVi users get digital money they can spend at the university. Cho thinks it’s important to see the value in waste.