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Why Building a Perpetual Motion Machine Is Impossible

Since the Middle Ages, scholars have been trying to build the mythical perpetual motion machine. All their attempts have.. Read More

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Exploring the Fascinating History of Popcorn!

5:20 Exploring the Fascinating History of Popcorn!

16 of Leonardo da Vinci's Inventions Tested!

7:47 16 of Leonardo da Vinci's Inventions Tested!

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17:03 What is a Ballistic Missile and is Its Purpose?

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