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1 .This is Scientific American 60-Second Science. I'm Cynthia Graber. Got a minute?
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2 .Scientists have been looking to nature for inspiration for materials with useful properties.
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3 .Insect exoskeletons and shark skin are examples of materials that exhibit strength, durability, and less wind and water drag.
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4 .They're also looking at natural construction that could inform our own design projects.
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5 .In that arena, researchers recently focused on the shape and structure of seashells.
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6 .In a new study, they report on the properties of two types of shells collected from a sea shore in southern India: a bivalve with a typical clamshell-style shell, and a screw-type shell belonging to a turbinate.
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7 .The scientists performed a detailed analysis of the structures and the ways in which they respond to stresses at various locations.
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8 .They determined that the bivalve distributes force along the outer edge of the shell to protect the soft body inside.
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9 .The screw-shaped shell keeps force directed at large rings while the soft body stays within the smaller rings.
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10 .The two shell shapes can survive loads nearly double that which could be withstood by a simple sphere or cylinder.
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11 .The study is in the journal Science Advances.
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12 .So if you wind up driving a shell-shaped car someday, it'll be both stylish and designed to protect the soft bodies inside.
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13 .Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.
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