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Scientists use 3-D printing to help grow an ear

WASHINGTON -- Printing out body parts? Cornell University researchers showed it's possible, creating a replacement ear using a 3-D printer and injections of living cells.

The work reported yesterday is a first step toward one day growing customized new ears for children born with malformed ones, or people who lose one to accident or disease.

It's part of the hot field of tissue regeneration,...

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