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Wings on Sticks

Insects known as "walking sticks" have gained and lost wings several times over the last 10 million years. At least that's what a study in this week's issue of Nature magazine contends. NPR's Michele Norris talks with Michael F. Whiting, professor of evolutionary biology at Brigham Young University and lead author of Loss and Recovery of Wings in Stick Insects.

Copyright 2003 NPR

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