'Jellyfish aircraft' takes flight (w/ Videos)

Inspired by nature and by the aviation pioneers of the early 20th century, scientists in the United States said Wednesday they had built the world's first jellyfish aircraft.

New study improves 'crowd wisdom' estimates

In 1907, a statistician named Francis Galton recorded the entries from a weight-judging competition as people guessed the weight of an ox. Galton analyzed hundreds of estimates and found that while individual guesses varied ...

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