There's an example here:
"The last time food prices shot up, in the 1970s, the U.S. response was to put more land into agricultural production. This was the infamous "fencerow-to-fencerow" policy of Secretary of Agriculture Earl Butz that Michael Pollan, author of The Omnivore's Dilemma, has linked to the glut of corn -- and corn syrup -- that has so profoundly affected global diets. "The whole piece discusses how North Korea was and is a canary warning the world of imminent catastrophe.
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