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04:00 Earth and Space Science Why extremophiles bode well for life beyond Earth Lesson duration 04:00 144,603 Views
03:57 Literature & Language Speech acts: Constative and performative Lesson duration 03:57 221,329 Views
04:33 History The most groundbreaking scientist you've never heard of Lesson duration 04:33 3,029,654 Views
04:18 Life Sciences The physics of human sperm vs. the physics of the sperm whale Lesson duration 04:18 4,378,246 Views
