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TIL of brain stimulation reward, manually stimulating specific parts of the brain to elicit pleasure and happiness. A volunteer subject in 1986 spent days doing nothing but self-stimulate. She ignored her family and personal hygiene and she developed an open sore on her finger from using the device.

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9YXAr TIL that in 2012, an Indian nurse looking after the Duchess of Cambridge was prank called by an Australian radio station pretending to be the Queen. This led to her revealing confidential information which was then broadcast on the radio. 3 days later, she committed suicide by hanging.
A9Po TIL The United States hasn’t had a period of peace since WWII
jO4M TIL Earning interest on loaned money originates from the lending of “food money” that was commonplace in Middle Eastern civilizations as early as 5000 B.C. The argument that acquired seeds and animals could “reproduce themselves” was used to justify interest.
rRJY4 TIL about Dr. Leonoid Rogozov, a physician who took part in an antarctic expedition in 1961, developed appendicitis and successfully performed a self-appendectomy with the help of a driver and meteorologist at their Antarctic research station.
b9654 TIL Nearly 8% of the human genome is virus DNA. Meaning some of our ancestors survived a virus but still carry the DNA it inserted.