Uncovering ancient texts
For more than 20 years, Dr. Keith Knox, Air Force Research Laboratory scientist (second from left), has traveled the world to recover erased texts of ancient manuscripts. His activities recently took him to St. Catherine’s Monastery in the Sinai Desert. Photo by Mark Schrope. Used with permission.

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Photo by: Mark Schrope. Used with permission. |  VIRIN: 130214-F-HL169-666.JPG