A pall of smoke from burning cities would engulf Earth, causing worldwide crop failures, models show.
about the global consequences of nuclear war. It seems especially relevant today as Russia’s war against Ukraine has disrupted global food supplies, underscoring the far-reaching impacts of a regional conflict.Nuclear war comes with a range of lethal impacts, from killing people directly in atomic blasts to the lingering effects of radiation and other environmental pollution.
Using data from the United Nations’ Food and Agriculture Organization, Xia’s team calculated how declining crop yields and fishery catches after a nuclear war would affect the number of calories available for people to eat. The scientists studied several options, such as whether people continued to raise livestock or whether they routed some or all crops meant for livestock to humans instead.
The study is a useful step towards understanding the global food impacts of a regional nuclear war, says Deepak Ray, a food-security researcher at the University of Minnesota in Saint Paul. But more work is needed to accurately simulate the complex mix of how crops are produced around the world, he says.
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