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  1. Earth

    Long Ride West: Many western sediments came from Appalachians

    Much of the material in several thick layers of sandstone in the western United States originated in the Appalachians.

    By Sid Perkins

  2. Dyslexia’s DNA Clue: Gene takes stage in learning disorder

    For the first time, scientists have identified a gene that appears to influence the development of at least some cases of dyslexia.

    By Bruce Bower

  3. 19269

    This article on using magnetic fields to map and possibly treat brain disorders contrasted sharply with the article a few pages earlier about magnetic fields inducing cells to develop tumors (“Cells proliferate in magnetic fields,” SN: 9/23/00, p. 196: Available to subscribers at Cells profilerate in magnetic fields).