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SciShow: Why Are There Righties & Lefties?

2 minutes 31 seconds

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Still image from: SciShow: Why Are There Righties & Lefties?

About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution. Part of the "SciShow" series.

Media Details

Runtime: 2 minutes 31 seconds

Topic: Science
Subtopic: Biology, Evolution
Grade/Interest Level: 10 - 12
Standards:

Release Year: 2013
Producer/Distributor: Complexly
Series: SciShow
Writer: Polly O'Shea
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