The report, which was prepared by more than 100 experts from 52 countries, was released in summary form today. It warns that climate change will exacerbate the dangers, as extreme weather threatens to disrupt and shrink the global food supply.

Food shortages could also increase a flow of immigration that is already redefining politics in North America, Europe and other regions. From 2010 to 2015, the number of migrants from El Salvador, Guatemala and Honduras who traveled to the U.S. increased fivefold, coinciding with an unusually dry period that left many without enough food.

What’s next: Addressing the crisis would require a major re-evaluation of land use and agriculture as well as consumer behavior, the report suggests. Proposals include increasing the productivity of land and eating less meat.

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