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TIL "The Cosmic Sequence" is a set of numbers starting with 3 cubed, which pythagoras said "represents the cosmos". It seems he was onto something.

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YOAd TIL mirrors reflect slightly more green light than other colors, which causes a “mirror tunnel” (such as two mirrors facing each other) to appear greener further down the tunnel.
M7M6A TIL that some people dream in black and white https://www.thelist.com/434087/the-weird-reason-people-dream-in-black-and-white
GAYbG TIL: In 1937 the entirety of the Soviet Central Institute of Aerodynamics were arrested meaning that many WW2 planes were designed from prison
kZdE TIL that Jim Woodman theorized that the Nazca lines were built via an ancient form of flight. TO prove this he constructed a hot air balloon only using resources that were available to the ancient Nazca people.
4eDR TIL people started dying cheese orange back in the 17th century to fool people into thinking it was higher quality