“Get back to the three and a half billion dead people,” Stratt said. “Sure,” he said. “The math of famine is actually pretty easy. Take all the calories the world creates with farming and agriculture per day, and divide by about fifteen hundred. The human population cannot be greater than that number. Not for long, anyway.” He fiddled with a pen on the table. “I’ve run the best models I have. Crops are going to fail. The global staple crops are wheat, barley, millet, potatoes, soy, and most important: rice. All of them are pretty sensitive about temperature ranges. If your rice paddy freezes
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