Source: Gerald C. Nelson, WASHINGTON POST, 1/2/19

Gerald C. Nelson is a professor emeritus at the University of Illinois at Urbana-Champaign and a former senior research fellow at the International Food Policy Research Institute. Providing food security to the nearly 10 billion people who will inhabit the globe by 2050 is one of the key issues of the 21st century. Given that reality, you might think the international community would at least be able to agree on how to define the problem. Unfortunately, you would be wrong.

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