The mysteries of left-handed people
By Perri Klass, M.D. | New York Times | Updated: 2011-03-20 07:24
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Gerald Ford was usually cited as left-handed. Ronald Reagan wrote with his right hand but used his left for many tasks. Bill Clinton was fully left-handed. Agence France-Presse / Getty Images, Left and Center; Richard Perry / The New York Times |
Humans are asymmetric animals. Early in our embryonic development, the heart turns to the left. The liver develops on the right. The left and right lungs have distinct structure.
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