Interesting things that have disappeared in the past 100 years

Water will flow uphill

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As long as you use the right method, work won't be that tiring.

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Car Disassembly Video

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A Mortal's "Cultivation of Immortality"

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Why do we need to cut a slant on the tree when felling it?

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Why can loose sand be made into sand sculptures after mixing with water?

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There are no such things as "useless people" in this world—when properly utilized, everyone is a tre

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Yemen is the first country to be destroyed by drugs, even children are not spared. How tragic is it?

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They say diamonds are forever, but they can be burned and broken.

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Gear machining: Why only a tiny bit of cutting is required? #Science #Unzip #Machinery #ExtremeComfo

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How are mooring ropes secured? #Science #Unzip #MooringRopes #Ship

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Why not use a high-pressure water gun to wash your car? #Science #Unzip #High-pressureWaterGun #CarW

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Mermaid

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Why can a hatchet easily chop down a tree as thick as a bowl? #Science #Relief #Hatchet #Logging #Tr

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[Radioactive Boy] A genius boy created a thousand-fold radiation source at home, and his life ended

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Why don’t civilian aircraft spray flames? The working principle of turbofan jet engines

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How difficult is it to immigrate to Iceland? A firsthand account: What should you pay attention to w

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Why doesn't it hurt when a needle is stuck in my finger?

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Super cool mechanical series of speed bumps! 7.18

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How are the patterns painted on ceramics? #Science #StressRelief #Pottery #LearnSomethingNew

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