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Psychology
Why rumors about vaccines spread— and how to rebuild trust - Heidi Larson
lesson duration 16:08
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Science & Technology
The genes you don't get from your parents (but can't live without)
lesson duration 05:03
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Design, Engineering & Technology
Blood, concrete, and dynamite: Building the Hoover Dam
lesson duration 05:12
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322,141 views
151,228 views
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