White phosphorus: A mysterious substance found in urine. Put it on pork and a horrific scene will ha

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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What Is Simple Harmonic Motion? When Two Small Balls Are Released Simultaneously, Something Amazing

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The metal was clearly cut, so why isn’t there even a seam in sight?

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Sexual Knowledge | Couples Should Definitely Not Sleep Naked!!

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Where’s the safest seat on an airplane?

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Can you believe it? Diapers were actually invented for astronauts! Gagarin once nearly burst from ho

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An excavator can dig 300 tons in a single scoop—so why don’t we keep building even bigger ones? #Sci

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

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3D-printed small toy

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Crusher vs. Eggs, very stress-relieving

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These stories about the flag-raising event at Tiananmen Square are actually fabricated!

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Handmade mosquito bomb

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Comparison of the size of tsunamis in history

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Getting inside a giant balloon looks like a lot of fun, but it's actually quite challenging.

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50 Shades of Compromise

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How to make an emergency landing if the aircraft tire fails?

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What is Zeno's Paradox? You might never finish watching this video! The mind-bending Dichotomy Parad

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Mercury, the natural nemesis of gold, when mercury is dropped onto gold foil, an interesting phenome

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

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The incredible "Laval tube": the wider the tube, the faster the gas flows. Do you know the principle

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