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  1. Lady-killing genes offer pest control

    Two new fruit fly lines—with females that die on cue—could lead to changes in pest control.

    By Susan Milius
  2. Math

    Stepping Beyond Fibonacci Numbers

    Trying variants of a simple mathematical rule that yields interesting results can lead to additional discoveries and curiosities. The numbers 1, 1, 2, 3, 5, 8, 13, 21, 34, and 55 belong to a famous sequence named for the Italian mathematician Fibonacci, who lived more than 700 years ago. Each consecutive number is the sum […]

    By Ivars Peterson
  3. Math

    Stepping Beyond Fibonacci Numbers

    Trying variants of a simple mathematical rule that yields interesting results can lead to additional discoveries and curiosities.