HARI SREENIVASAN:
Have you ever watched a bee fly? Really watched them closely? Or studied a butterfly or dragonfly darting around your garden?
With the naked eye, it's often hard to see how they are flying, with tiny wings that can flap hundreds, and sometimes thousands, of times a minute. But when you watch in slow motion with the help of a high-speed camera, you get a whole new perspective on the mysterious, and incredibly complex world, of insect flight.
So how does a bee with such a giant body and such tiny wings actually fly?
TOM DANIEL, University of Washington: It beats its wings really fast, and you can't even see that.
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