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(TheEconomist) ONE of the extraordinary things about the modern world is that so much of it takes food for granted. For most of recorded history, the struggle to eat has been the main focus of human activity, and all but a handful of people were either farmers or farm workers. Starvation was an ever-present threat. Even the best years rarely yielded much of a surplus to carry over as an insurance against leaner times. In the worst, none but the powerful could be sure of a full stomach. .. read this article at TheEconomist.com