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1 .This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.
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2 .What do a hummingbird, a moth, and a maple tree have in common?
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3 .They all use a similar trick to fly.
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4 .Okay, okay, a maple tree doesn't fly.
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5 .But its seeds kind of do.
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6 .Maples make those little whirlybird seeds you see spiraling down in droves each spring.
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7 .Their papery little wings keep them aloft so they can find a good place to germinate and make a new maple.
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8 .But how they manage to fall so slowly has been a bit of a mystery until now.
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9 .Scientists filmed maple seeds as they wafted through a smoke-filled wind tunnel.
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10 .And they found that a spiral of air develops on top of each falling seed's wing.
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11 .That vortex generates lift, and acts like a miniature tornado that sucks the seed up.
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12 .The study appears in the June 12th issue of the journal Science.
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13 .The same type of vortex also helps bats, hummingbirds and insects soar.
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14 .So it seems that plants and animals have both stumbled on the same aerodynamic approach to battling gravity.
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15 .Which explains why the acorn might not fall far from the tree,
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16 .but maple seeds can really go the distance.
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17 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.
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