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Phosphorus can be reused. According to some studies, there are enough nutrients in one person’s urine to grow 50 to 100 percent of the food needed by another person.

Phosphorus can be reused. According to some studies, there are enough nutrients in one person’s urine to grow 50 to 100 percent of the food needed by another person.

Phosphorus can be reused. According to some studies, there are enough nutrients in one person’s urine to grow 50 to 100 percent of the food needed by another person.

https://news.climate.columbia.edu/…running-out/