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The Secret Life of Fleas

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Caren B. Les, [email protected]

If you’ve ever wondered whether fleas jump using primarily their toes or their knees, wonder no more. Gregory P. Sutton and Malcolm Burrows at the University of Cambridge in the UK have solved the mystery. Using a high-speed camera, they filmed 10 leaping fleas, proving that the creatures push off with their toes. Since 1967, there had been a somewhat heated debate among scientists as to whether fleas, in their energetic frenzy, push off with their knees or toes. Upon realizing that fleas remain perfectly still in the dark and resume their jumping antics when the lights are...Read full article

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    Published: April 2011
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