2023, 87 minby Rubén Abruña
When sewers were built in the 19th century, they were regarded as a blessing. Deadly epidemics that wiped out millions of people became a thing of the past in the Western world. However, sewers also abolished the millennia-old tradition of using our excrement as fertilizer, and broke the nutrient cycle of grow-eat-excrete-compost-to grow food again. The modern flush and forget toilet discards our excrement as waste, while agriculture uses more mineral fertilizers to produce food. Mineral fertili
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