We're Having A Fertilizer Emergency, So We're Going To Need Everyone's Pee

As the world runs out of easily mined phosphorous and potassium resources, the solution to "peak fertilizer" could be ... inside of all of us.

By some estimates, we could hit "peak fertilizer" within 20 years, after which supplies of mass-produced nitrogen, phosphorus, and potassium may begin running low. That's scary for two reasons. One, we need these minerals for growing food and sustaining life. And two, resource shortages tend to lead to high prices, and market domination by a select few. If you don't like Saudi Arabia controlling the oil supply, you may not like Morocco--which has 85% of the world's phosphorus--with a stranglehold on what you eat.

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