Science Explains Why So Few People Are Left-Handed

Left-handers aren't very common. In fact , they only represent about 10 percent of the human population. But a new study suggests that the reason lefties are in the minority isn't anything suspect—rather, it boils down to the fact that the human race cooperate more than they compete. » 4/26/12 7:22am 4/26/12 7:22am