Ted Talk Reveals the Reason for Left Handedness

Really cool look at the origin of handedness and what purpose it serves in evolution.

Today, about one-tenth of the world’s population are southpaws. Why are such a small proportion of people left-handed -- and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and righties gives insight into a balance between competitive and cooperative pressures on human evolution. 

comments powered by Disqus