TIL about how scientists taught monkeys the concept of money. Not long after, the first prostitute monkey appeared.

https://www.zmescience.com/research/how-scientists-tught-monkeys-the-concept-of-money-not-long-after-the-first-prostitute-monkey-appeared/

https://www.reddit.com/r/todayilearned/comments/15izubr/til_about_how_scientists_taught_monkeys_the/