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Flapping Their Wings

As chicks mature, they strengthen their breast muscles by flapping their wings vigorously

Smithsonian magazine   |   :32
Preview thumbnail for The Corning Museum of Glass

The Corning Museum of Glass

Preview thumbnail for The Incredible Flying Car of the 1950s

The Incredible Flying Car of the 1950s

Preview thumbnail for Need a New Organ? Surgeon Anthony Atala Sees a Future Where You Can Simply Print It Out

Need a New Organ? Surgeon Anthony Atala Sees a Future Where You Can Simply Print It Out