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Why we need to go back to Mars - Joel Levine
In this talk, planetary scientist Joel Levine shows some intriguing -- and puzzling -- new discoveries about Mars: craters full of ice, traces of anc…
4 days, 8 hours ago
Which voting system is the best? - Alex Gendler
Dive into four different voting systems: plurality, instant runoff, tactical, and the Condorcet method, and find out which is fairest.
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Imagine we w…
4 days, 9 hours ago
Your smartphone camera isn't quite as impressive as you believe - Rachel Yang
Learn more at https://brilliant.org/TedEd
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When the Visualphone VP210 hit the market in 1999, it advertised a never-before-seen feature: a camera. Wi…
4 days, 9 hours ago
Why are there so many distinct dog breeds? - Kathleen Morrill Pirovich
Trace the evolution of dog breeds, and find out why their characteristics, behaviors, and personalities vary so widely.
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The immense physical variety…
4 days, 10 hours ago
Why do rivals establish their shops adjacent to each other? - Jac de Haan
View full lesson on ed.ted.com - http://ed.ted.com/lessons/why-do-competitors-open-their-stores-next-to-one-another-jac-de-haan
Why are all the gas st…
4 days, 11 hours ago
How inventions transform history (for better and for worse) - Kenneth C. Davis
View full lesson: http://ed.ted.com/lessons/how-inventions-change-history-for-better-and-for-worse-kenneth-c-davis
Invented in 1793, the cotton gin ch…
4 days, 12 hours ago
ET is (probably) out there -- get ready - Seth Shostak
SETI researcher Seth Shostak bets that we will find extraterrestrial life in the next twenty-four years, or he'll buy you a cup of coffee. At TEDxSan…
4 days, 13 hours ago
Can humans be trusted with command over genetics? - Michael Vazquez and Raye Ploeger
Puzzle through this classic ethical dilemma and decide: should parents be able to choose genetic traits for their children?
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Andre and Leslie are a d…
4 days, 13 hours ago
The Chinese tale of the butterfly lovers - Lijun Zhang
Dig into the Chinese myth of Zhu Yingtai, who disguises herself as a boy in order to attend school, and her love Liang Shanbo.
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Although only boys we…
4 days, 14 hours ago
How precisely do inhalers function? - Anna Rothschild
Dig into the science of inhalers, and find out how these devices treat common respiratory conditions like asthma and COPD.
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Inhalers are mainly used …
4 days, 15 hours ago