Deep in the West Virginia woods, in a small cabin powered by the sun and the wind, a bespectacled, white-haired man is giving a video tour of his basement, describing techniques for the long-term preservation of food in case of "an emergency. "
"We don't really think of those today, because it's so convenient to go to the supermarket," he cautions. "But you know, you're planning because the supermarket may not always be there."
The electrical grid could fail tomorrow, he frequently warns. Food would disappear from the shelves. Water would no longer flow from the pipes. Money might become worthless. People could turn on each other, and millions would die.
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