Cool Video: Toward Understanding Left-Handedness

Are you left-handed?  You must know someone who is southpaw.  There are all sorts of superstitions around left-handedness.  Is it a curse?  Is it dirty?  Is it a faulty wiring of the brain ?  Are lefties more creative?  More accident prone?  It seems like we know very little about it. This Cool Video from It's Okay to Be Smart explains some of the latest thinking on why 10% of the population is left-handed and what it means about the brain's organization.  The video runs about 5.5 minutes, but it is both entertaining and informative.