Science: Leap of the Flea

In all of nature, there is hardly a more impressive athlete than the tiny flea. The pesky wingless insects are not only able to jump distances of more than 100 times their body length, but they also make the jumps repeatedly, apparently without tiring. The Oriental rat flea, for instance, can hop steadily for three straight days 600 times an hour. Now a group of researchers, led by British Entomologist Miriam Rothschild (of the banking family), believes that it has uncovered the secret of the flea's remarkable prowess.

The main propulsion for the great...

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