Billions of people around the world live far from where their food is grown.
It's a big disconnect in modern life. And it may be about to change.
The world's population is expected to reach 9.7 billion by 2050, 33% more people than are on the planet today, according to projections from the United Nations. About two-thirds of them are expected to live in cities, continuing a migration that has been under way around the world for years.
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