In just 30 seconds, you actually built the Hotan–Ruoqiang Railway!

In just 30 seconds, you’ve already helped with Beijing’s Central Axis World Heritage application and

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How scary is it to land a plane in a gusty wind? #Science #Relief #Aircrash #Knowledge

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How a Car Engine Works

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How powerful is the power of science?

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Every little science experiment can be explained using scientific knowledge.

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[Minecraft] If I teach you these techniques, will you fight for MC for another 10 years?

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A millennium-old mystery—anyone who understands can step forward and explain it.

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Battery Magnet Train

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The power of science

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What kind of wisdom did the ancients have to design such a sophisticated mechanism?

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I advise you to quit porn (enlarging testicles)

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Introduction to Traditional Group Farming Culture in Africa

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The Ultimate Sense of Comfort and Aesthetic Beauty

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Introduction to Tequila

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Are the videos we watched fake? Has wild sex education been fooling us all these years?

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The Butterfly Effect

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The foreigner's giant plow tractor actually has a cab from the last century!

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The Fertilization Process of Sperm and Egg

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Incest, but not completely

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The harsh truth about nursing homes: betting your entire fortune on the kindness of others!

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