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TIL: The average person can see around 1 million colors but tetrachromats, people with a fourth cone, can perceive around 100 million

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R54Nj TIL in 1967 a man named Thomas Jolley fled the US to Canada and renounced his citizenship to avoid being drafted in the Vietnam War. A few months later he returned to the US and was ordered deported, but Canada refused to accept him back. He spent the rest of his life in the US as an illegal alien.
5QbP TIL When Andrew W.K. was 17, he wrote a love song for a crush, earning him a juvenile restraining order.
6Zd8 TIL that from the 8th to the 18th century, Arab scientists experimented with marijuana for medicinal purposes and were well aware of its benefits
7w5L TIL that if you were to orbit a black hole in its photon sphere, you would see the back of your own head
4XDpw TIL that although at first glance the single character sentence 子子子子子子子子子子子子 does not seem to make sense, when this sentence is read using the right readings of the kanji 子, it means "the young of cat, kitten, and the young of lion, cub".