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  1. Tech

    Timing Is Everything: Implantable polymer chip delivers meds on schedule

    A polymer microchip implanted under the skin could deliver multiple doses of medications at programmed intervals, eliminating the need for pills and injections.

    By Alexandra Goho
  2. Earth

    Chicken Little? Study cites arsenic in poultry

    Most chicken eaten in the United States contains 3 to 4 times as much arsenic as is present in other kinds of meat and poultry.

    By Ben Harder

  3. IQ Yo-Yo: Test changes alter retardation diagnoses

    Mental retardation placements in U.S. schools rose dramatically in the first five years after a commonly used IQ test was revised, raising concerns about how IQ scores are used to diagnose mental retardation.