by Rebecca Carden, FoodTank, USA – The average person urinates about 500 liters and defecates 72.5 kilograms of excreta annually. Rounding the world population off to an even seven billion, that means that human beings produce approximately 3,500 billion liters of urine and 507.5 billion kilograms of feces every year. Impressive…
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Feces Can Change the World: Using Human Excreta as Fertilizer
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