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TIL American Express created the Black Card (Centurion card) amid rumors and urban legends in the 1980s that it produced an ultra-exclusive black card. Meaning rumors about the card came before the card actually existed.

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epE7L TIL the town of Rjukan in Norway receives no natural sunshine from September to March owing to the sheer mountains that surround it. They have built three enormous mirrors to reflect light into the town square. The mirrors follow the sun's path and move every 10 seconds to form a 600m square pool of
8rmK TIL The Make A Wish foundation was the brainchild of two Arizona cops, dreamed up while flying home from the funeral of a little boy who had they made an honorary officer, after the boy was diagnosed with leukemia
kKVB TIL that Portobello, Cremini, and Button (White) mushrooms are all different stages of maturity for the same mushroom.
d8Kx8 TIL that cows contaminated with radiation from the Chernobyl disaster caused nearby computers to crash.
NX4AP TIL Concrete is the second-most consumed substance on Earth behind only water. Thirty-three billion tons of it are used each year, making it by far the most abundant human-made material in history