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2008-02-04 17:50:00

Natural flyers like birds, bats and insects outperform man-made aircraft in aerobatics and efficiency. Engineers are studying these animals as a step toward designing flapping-wing planes with wingspans smaller than a deck of playing cards.


Word of the Day
tourtiere
  • a meat pie that is usually eaten at Christmas in Quebec
The word 'tourtiere' comes from the French tourte, or passenger pigeon.
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