It seems like every week, there’s another story about food processing plants shutting down for health issues—either from a food-borne illness or, these days, from a coronavirus outbreak among workers. Some plants have become COVID-19 hot spots, while also facing spikes in demand as consumers stock up their pantries. All of this makes our food supply more vulnerable than we might think. Recently, when three major food production companies had to temporarily shut down factories because of COVID-19, 15% of U.S. pork production vanished overnight. The problem is so serious that John Tyson,...

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