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Rapid Lesson: The creature that kills the most people every year
00:45
Rapid Lesson: A duck can't walk without bobbing its head
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Rapid Lesson: Sponges Hold More Cold Water Than Hot Water
01:35
Rapid Lesson: Yonge Street - The Longest Street in the world
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Rapid Lesson: Cervical Rib(s) 1 in 500 People Have It
01:35
Rapid Lesson: Sweden has the largest amount of preserved medieval stained glass in Nordic countries
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