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Bill Gates opens 'Reinvented Toilet Expo' in China, promoting biggest sanitation advances in 200 years – GeekWire
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Bill Gates opens 'Reinvented Toilet Expo' in China, promoting biggest sanitation advances in 200 years – GeekWire
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Bill Gates opens 'Reinvented Toilet Expo' in China, promoting biggest sanitation advances in 200 years – GeekWire
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Bill Gates opens 'Reinvented Toilet Expo' in China, promoting biggest sanitation advances in 200 years – GeekWire
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Bill Gates Bets Millions That These Futuristic Toilets Will Change the World, Environment | The Weather Channel
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Bill Gates puts poop on podium to tout toilet technology at Beijing "Reinvented Toilet" Expo in China - CBS News
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