The incredible Buffon needle throw: throwing a needle randomly on paper can actually calculate "π"!

The incredible ulexite is opaque but can project objects onto its surface. Do you know the principle

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

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50 Shades of Compromise

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Build Most Amazing Simple Underground Temple Living of the King

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A girl attended a comic exhibition and was fed candy by a strange girl. After eating, the razor blad

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☝色情电影布景师

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[Goat] A shameless devil's advocate?

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Can you pick up these things when you’re collecting seafood at low tide? Some of them, definitely do

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Life hacks hidden in plain sight

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Learn something after watching

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The world’s Guangji Bridge is the earliest bascule bridge in history.

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Why is a single toothpick so expensive?

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Bamboo is drilled and filled with liquor to make bamboo‑tube wine, while tree trunks are scorched to

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Chain reaction

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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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Incredible "Ball Clock"! Use a small ball to tell time. Do you know the principle?

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What is the lotus effect? Magnifying a leaf 500 times reveals why it doesn't get wet

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Why can an anchor stop a hundred-ton giant ship? How long is the anchor chain? An animated explanati

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The incredible elastic tunnel plug inflates into an air bag in half an hour to block the influx of f

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How do "rogue waves" form? 30 meters high, destroying ships is as easy as tearing paper!

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