The ancient navigational tool "Sextant" is still in use today! Do you know how it works?

What is the principle of "laser rust removal"? The bright light sweeps over the metal parts and make

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Sex is a resource women hold in their hands—and a key factor that shapes women’s social hierarchy an

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The “Speed Bump Man”—a machine no one can resist

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Why do honey collectors only harvest a small portion of the hive when harvesting honey at high altit

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Bloody and Brutal! A Compilation of Cat Fights!!

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Amazing! Watch 28 types of mechanism principles in one go.

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One hundred thousand tons, this speed is really unscientific

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[Remix]Dubbers of four versions of Ice Bear|<We Bare Bears>

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The Production of Penicillin

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Let’s take a look at those amazing jobs.

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Which clouds should you run from?

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Traditional Penicillin Production

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Do you know what kind of water you can use to wash your hands?

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The incredible "fluidized bed", sand flows like liquid, do you know the principle?

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Incredible aluminum honeycomb structure, a metal as soft as silicone! How is it made?

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The ocean is so deep—how on earth are the piers of a cross-sea bridge built? After watching this, yo

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The magical "sulfur hexafluoride" gas, inhale it into your mouth and speak, interesting phenomena wi

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Is there a formula for skipping stones? A stone can bounce 88 times on the surface of water. Do you

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Teapot effect: A question that has puzzled scientists for many years: why does tea flow down the out

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稀土是什么？“中东有石油，中国有稀土”！了解中国稀土的重要性

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