Add Yahoo as a preferred source to see more of our stories on Google. Part of a portable nuclear power plant arrives at Camp Century in 1960. Bettmann Archive/Getty Images In a tunnel 40 feet beneath ...
(THE CONVERSATION) In a tunnel 40 feet beneath the surface of the Greenland ice sheet, a Geiger counter screamed. It was 1964, the height of the Cold War. U.S. soldiers in the tunnel, 800 miles from ...
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