Take Miami, Florida, for example. It has a human population of about 409,000. But a factory farm with 2,500 cows can equal Miami’s production of “fertilizer.”
Even more concerning is that the waste from really large factory farms, what the government calls “concentrated animal feeding operations” (CAFOs), is not treated. It simply gets dumped—either onto fields as fertilizer or stored in surface ponds that can grow into small lakes.
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