To protect them against enemies and intruders after death, Egypt's pharaohs were entombed with their treasures in cleverly concealed chambers deep with in their monumental pyramids. Most of these royal burial vaults have long since been discovered and looted, but some archaeologists suspect that others still lie undisturbed behind tons of lime stone and granite blocks. Egypt's pyramids may soon yield their remaining secrets. In a speech before the American Physical Society last week, University of California Physicist Luis Alvarez reported that his ingeniously conceived project to peer into the pyramids with cosmic rays is about to get under...
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