Why Do Lefties Exist?

Feb 24, 2015

For at least the last 200,000 years, between 10-15% of the human population are left-handed and this fact has utterly left science baffled. In searching to explain handedness, all sorts of contradictory evidence has emerged, creating a fascinating mystery. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

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