One man’s trash is another man’s treasure, they say. Well, in a South Korean school, one man’s poo is another man’s pennies. The invention of a toilet that composts human excrement and turns it into methane biogas for use in the school’s energy system has the students there re-evaluating waste like never before, as the […] The post Student Invents Toilet That Converts Poop into Energy – With Cryptocurrency Payment for Contributors appeared first on Good News Network.