Microsoft founder Bill Gates speaking during the Hongqiao International Economic and Trade Forum in the China International Import Expo at the National Exhibition and Convention Centre on November 5, 2018 in Shanghai, China. Lintao Zhang / Getty Images
Bill Gates, toilets are serious business. The billionaire philanthropist kicked off the Reinvented Toilet Expo in China and unveiled a new toilet that does not require water or sewers, and uses chemicals to turn human waste into fertilizer, Reuters reported.
"We are all here for one reason: because more than half the world's population doesn't have the safe sanitation they need to lead healthy and productive lives," Gates said in a
speech on Tuesday in Beijing.