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195

TIL that Anti-Climb Paint was a thing

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Ynjd TIL that after needing 13 liters of blood for a surgery at the age of 13, a man named James Harrison pledged to donate blood once he turned 18. It was discovered that his blood contained a rare antigen which cured Rhesus disease. He has donated blood a record 1,000 times and saved 2,000,000 lives.
4kO65 TIL that there are at least 5 species of shark living in the Thames estuary (which runs through London), and that one of those species is venomous.
4kEYg TIL that a Japanese Fu-Go balloon bomb killed 6 civilians in Oregon on May 5th, 1945.
epEZ4 TIL of a Lithopedion, a calcified stone foetus caused from a rare complication in abdominal pregnancy (which, in itself, is rare).
9YLE6 TIL that during the battle of Hampton Roads, the USS Monitor's spinning turret became difficult to stop. The crew allowed the turret to spin around in circles and fired the turret on the fly, similar to a "360 no scope"