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TIL that moon landing conspiracy theories were proven wrong in 2011 when a nasa probe revealed high-resolution photos of the apollo moon landing sites.

Read more huffingtonpost.co.uk

via reddit.com

oxr7 TIL the ratio in length between the middle:pointer finger can be used to determine how much testosterone you were exposed to in the womb
4kgo5 TIL a boot-scraper, door scraper, or decrottoir is a device consisting of a metal blade, simple or elaborate, permanently attached to the wall or to the sidewalk at the entrance to a building to allow visitors to scrape snow, mud, leaves, or manure off the soles of their shoes before entering
x6KGk TIL in the 1870s and 1880s, prostitution was the primary job for women in Helena, Montana. In 1886, the city had 52 prostitutes employed. The madams gained immense wealth and purchased multiple city blocks and even established their mortgage company.
NXwN TIL: In the 13th century, Rabbi Moses ben Naḥman (Nachmanides) wrote a description of the first moments after creation with a striking similarity to our modern understanding of the big bang and the expansion of the universe.
R50Z1 TIL that English speakers proposed abbreviating Coordinated Universal Time as CUT. French speakers proposed abbreviating it as TUC (for "temps universel coordonné"). Neither side got what they wanted, as the official abbreviation is "UTC".