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TIL: Having standard showtimes for films was not common until 1960. Previously most films would just play on a loop, and people could enter at any time. Alfred Hitchcock's Psycho required that people watch from the beginning to the end and made showtimes more standard.

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4k6oR TIL about Leopold Karpeles, a Jewish immigrant who worked on the Underground Railroad then went on to recieve the Medal of Honor in the Civil War.
a8nyy TIL blue whales emit sounds that other whales can hear up to 1,000 miles away.
e0oKJ TIL that there is a tree called the Idiot Fruit tree (Idiospermum australiense) which only occurs in Australia’s Daintree rainforest. It is also known as the green dinosaur due to it dating back over 100 million years.
N7DbN TIL that the larger Pacific striped octopus is one of the only species of octopus that is not cannbalistic during mating, rather the two partners embrace each other intimately with their beaks and suckers, and they live in groups of up to 40 individuals unlike most other solitary species of octopus
W77Ad TIL more than 35,000 Americans served in the Canadian Army in WWI, accounting for nearly 10% of all Canadian soldiers