Bill Gates foundation helped invent $350 toilets powered by worms

(Business Insider) - Worms may not have spines but theyre doing some back-breaking sewer work in more than 4000 toilets across India. Since 2015 a creative new type of toilet called the Tiger Toilet has been popping up outside homes and schools around the country. From the outside this toilet looks like any other pit latrine. But it doesnt smell like one. Instead it comes with a built-in population of tiger worms. Read More