Let's start with good news. One part of the problem is that more people have gotten used to eating. The sustainable growth in many countries such as China, India, many African countries and throughout Latin America has increased income levels. This has delivered food security to millions of human beings who have never had it -- and, of course, has had the consequence of higher prices.

If rising demand and prices for food were the only problem, the simple solution would be to increase production. However, there are other factors at play. Two of them are climate change and the attempt to mitigate it.

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