Why is only 10% of the world’s population left-handed?

Left-handedness (© Flickr/Neil Moralee)

As every left-hander knows, the world is set up for the convenience and safety of right-handers, and all sorts of sinister and guache associations are linked to the use of our southpaw. Ninety percent of us are naturally predisposed to use the right hand for most things and, while animals use each front paw more or less fifty percent of the time, only human beings have this decided one-sidedness. How come?

Producer: Anne Blair Gould

Broadcast: April 26, 1993