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One of the most "threatening" men in American history - Keenan Norris
Get to know the story of David Walker, an abolitionist whose antislavery pamphlet made him an enemy of the US government.
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In 1830, David Walker sewe…
1 month, 4 weeks ago
Curious answers to the psychopath test - Jon Ronson
Is there a definitive line that divides crazy from sane? With a hair-raising delivery, Jon Ronson, author of The Psychopath Test, illuminates the gra…
1 month, 4 weeks ago
How do airplanes actually remain in flight? - Raymond Adkins
Explore the physics of flight, and discover how aerodynamic lift generates the force needed for planes to fly.
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By 1917, Albert Einstein had explaine…
1 month, 4 weeks ago
Archeology from satellite imagery - Sarah Parcak
In this short talk, TED Fellow Sarah Parcak introduces the field of "space archeology" -- using satellite images to search for clues to the lost site…
1 month, 4 weeks ago
Can you freeze your body and be revived? - Shannon N. Tessier
Dig into the field of cryobiology and explore the possibility of humans being frozen and preserved for future resurrection.
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In 1967, James Bedford h…
1 month, 4 weeks ago