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05:06 Medical Conditions Is there a disease that makes us love cats? Lesson duration 05:06 1,904,317 Views
05:04 Literature & Language What makes something "Kafkaesque"? Lesson duration 05:04 13,271,858 Views
04:12 Design, Engineering & Technology How to fly around the world without fuel Lesson duration 04:12 40,345 Views
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07:13 Earth and Space Science What if everyone jumped at once? Lesson duration 07:13 40,159,910 Views
04:33 History Why wasn’t the Bill of Rights originally in the US Constitution? Lesson duration 04:33 979,943 Views
10:52 Philosophy Ralph Waldo Emerson and the Beauty of the Everyday Lesson duration 10:52 1,128,037 Views
05:03 Physical Science The otherworldly creatures in the ocean's deepest depths Lesson duration 05:03 2,283,832 Views
06:17 Earth and Space Science Three Ways to Destroy the Universe Lesson duration 06:17 27,724,318 Views
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