One broad study done for the UN’s Food and Agriculture Organization (FAO) predicts that by midcentury, climate change will reduce global crop output by just a fraction of one percent of today’s output. By 2080, in a worst-case scenario, production of cereals (including wheat, rice, maize, barley, oats, sorghum, and quinoa) will be 2.2 percent lower than it would be without climate change. So grain production will still increase overall, just by less than it could have done. The FAO expects an increase in global cereal production of 44 percent without global warming, and this study shows the
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