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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
ultimo
  • In the month which preceded the present; in the last month, as distinguished from the current or present month and all others.
  • In the month which preceded the present; in the last month, as distinguished from the current or present month and all others.
The word 'ultimo' comes from the Latin phrase 'ultimo mense', 'in the last month'.
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