Electricity Production from Student’s Poop. Cho isn't just relying on altruism or environmental conscientiousness to get people to use his eco-toilet, either: He's devised a virtual currency, Ggool, ('honey' in Korean) and pays users, mostly students, 10 Ggool a day to hit the can. Previous Next Pages: 1 2 3 4 5 6 7 8 9 10 invent invention korea poop student technology world 2021-07-17 admin