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05:20 Mathematics The paradox at the heart of mathematics: Gödel's Incompleteness Theorem Lesson duration 05:20 3,848,397 Views
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04:55 Business & Economics How do governments create money out of thin air? Lesson duration 04:55 975,549 Views
05:34 Science & Technology The most notorious scientific feud in history Lesson duration 05:34 1,128,257 Views
14:26 Sex Education How to practice safe sexting - Amy Adele Hasinoff Lesson duration 14:26 154,255 Views
04:57 Design, Engineering & Technology Could we build a wooden skyscraper? Lesson duration 04:57 1,401,115 Views
05:58 Social Studies The dark history of the Chinese Exclusion Act Lesson duration 05:58 1,125,466 Views
05:57 Social Studies How one person saved over 2,000 children from the Nazis Lesson duration 05:57 1,995,511 Views
04:53 Thinking & Learning Can you cheat death by solving this riddle? Lesson duration 04:53 5,670,777 Views
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05:04 Social Studies What few people know about the program that "saved" America Lesson duration 05:04 537,488 Views
