✨🌈🪐 Videos Today • February 4, 2025

Author

Rion Nakaya
February 4th, 2025

Daily knowledge and wonder. Share it with a kid.
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Inside your wallet lies an extraordinary piece of engineering disguised as an ordinary bank or credit card. In this demonstration from the BBC’s The Secret Genius of Modern Life, mathematician Hannah Fry peels back the layers of modern banking—literally. Using acetone, Fry dissolves a credit card’s PVC plastic casing to…

 

At San Francisco’s Exploratorium, a cityscape rises from an unlikely material: almost 200,000 wood toothpicks. Rolling Through the Bay, the world’s largest kinetic toothpick sculpture, sends colorful ping-pong balls zooming through miniature versions of the city’s iconic landmarks, each route telling a different story of San Francisco. Artist Scott Weaver…

 

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