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Bead chain experiment explained
Posted 10 years ago by boyt in category: interesting   Comments (0)

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The Evolution of Language
Stephen Fry & Jonathan Ross.
Posted 10 years ago by boyt in category: interesting   Comments (1)

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The History and Future of Everything
Posted 10 years ago by boyt in category: interesting   Comments (0)

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Fire fighting aircraft picking up water
Santa Fe Dam
Posted 10 years ago by Hoofie in category: interesting   Comments (0)

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Math Trick Multiply Using Lines
Posted 9 years ago by sifter in category: interesting   Comments (1)