
Fetal yawning
November 22, 2012 3:50 PM
British researchers discover a new mystery about the developing fetus. By using four D scans, they've determined that unborn babies actually yawn during the last few months before birth. Jeff Glor reports.
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November 22, 2012 3:50 PM
British researchers discover a new mystery about the developing fetus. By using four D scans, they've determined that unborn babies actually yawn during the last few months before birth. Jeff Glor reports.
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