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TIL: China used more cement in the last three years than the U.S. used in the entire 20th century.

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d87K9 TIL Jonas Salk, who played a key role in prevention of polio outbreaks, entered college as a pre-law student, hoping to be elected to Congress one day. He switched to medicine because his mother thought that he wouldn't become a successful lawyer.
yxme TIL that during pregnancy, if the mother of the baby suffers organ damage, the baby in the womb sends stem cells to repair the damaged organ.
woDOE TIL that video tape degrades over time. Within 10 - 25 years, tape can lose as much as 20% of recorded video.
ANMdB TIL At 17, Steven Spielberg directed "Firelight," a sci-fi film with a $500 budget. It premiered at a local cinema, drawing 500 attendees who paid a dollar each for tickets. One person paid $2, bringing the total earnings to $1. It marked Spielberg's first commercial success.
wLLDJ TIL 11 November is Chinese Singles Day, which evolves from a day to give yourself a nice present into a commercial holiday with billions in sale