Why are some people left-handed? - Daniel M. Abrams
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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.
Lesson by Daniel M. Abrams, animation by TED-Ed.
Watch video Why are some people left-handed? - Daniel M. Abrams online, duration hours minute second in high quality that is uploaded to the channel TED-Ed 03 February 2015. Share the link to the video on social media so that your subscribers and friends will also watch this video. This video clip has been viewed 10,325,505 times and liked it 197 thousand visitors.
