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TIL that ancient Romans used human urine as a mouthwash: Due to its ammonia content, urine was used as an ancient form of teeth whitening and stain removal.

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1a90V TIL Rihanna is the richest female musician in the world, although most of her wealth was created from her partnerships with Louis Vuitton Moët Hennessy.
a84pL TIL Leonard Maltin's Movie Guide was first released in 1969 when Leonard Maltin was still a teenager.
9YWV6 TIL that all Scottish fold cats are descended from a single barn cat named Susie. A local shepherd found Susie and started a breeding program in 1966. Susie's, and her descendants' iconic floppy ears are actually a sign of a painful genetic disease where the cat's cartilage is weak.
7rdEr TIL about the Tuol Sleng Genocide Museum, built on the site of "S-21," one of at least 150 torture and execution centers established by the Khmer Rouge. Of the estimated 20,000 people who were imprisoned at Tuol Sleng, there are only twelve known survivors.
Zpeop TIL The Tocorón prison where the Tren de Aragua gang originated, has hotel-like amenities such as swimming pool, nightclub, children play area, and even a zoo