A team at the National Institute of Standards and Technology has developed a new technique to recover information from magnetic tapes and disks. Noah talks with David Pappas, who heads that team, about the possibility that this technique could be applied to blank portions of the Nixon White House tapes, analyzed during the Watergate scandal. Recovering voices, he says, would be a long shot. But it might be possible to tell whether the tapes had been erased.
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