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10:25am, July 15, 2011
Magazine issue: Vol. 180 #3, July 30, 2011
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BODY & BRAIN
Infants may learn speech sounds as they snooze. Read “Sleeping babies learn in an eyeblink.”

LIFE
Researchers find a natural screwlike joint — in a beetle’s hip. See “Weevils evolved nut-and-screw joint.”

MATTER & ENERGY
An acoustic cloak made of metamaterials reflects sound off a bump as though it were a flat wall. Read “You haven’t heard it all.

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