When you hear the name Bill Gates, you'll probably think about computers and Microsoft, but not about toilets. Still, the billionaire is now bringing a 'reinvention' of the toilet, in which he invested 200 million dollars. Human excrement will be turned into clean water and fertilizer in the special toilet. In total, Gates is presenting 20 versions of the 'new' toilet, of which particularly the version that makes fertilizer and hydrogen has a chance of further development. Will tomatoes be grown on poop in the future?