The full study concludes that the total average global cost will be 0.26 percent of GDP by the end of the century. While we still will end up producing much more food for the world, global warming will mean we have to produce it with more effort and with more trade, overall leaving us less well off, at about a quarter of a percent of global GDP. And actually, this is in a worst-case scenario with very high warming; with less extreme warming the costs end up much closer to zero, and in three of eleven scenarios explored by the researchers there would actually be benefits of up to 0.15 percent
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