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Today I learned what a VISBILITY Brigade is.

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via reddit.com

j6A0n Today I Learned: In 1679 Papin invented his steam digester (pressure cooker), a closed vessel with a tightly fitting lid that confines the steam until a high pressure is generated, raising the boiling point of the water considerably. A safety valve of his own invention prevented explosions.
v1W6j TIL in 2013 a Brazilian football referee was killed and beheaded by spectators after he stabbed a player to death.
EMB7 TIL the longest point in pro tennis history was a 643-shot rally that lasted for 29 minutes.
P18PG Today I learned: A stray Dog in Istanbul, named Boji, uses Turkish public transportation by himself.
OoQJa TIL that difficulty in hearing in noisy places is a real medical condition called"cochlear synaptopathy" or "hidden hearing loss" and it is undetected in most hearing tests.