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TIL Medieval scholar Al-Biruni,after accurately measuring earth’s radius and judging by the size of Asia and Africa,predicted the existence of a landmass in the ocean between Asia And Europe,similar in size to the known continents and with similar geological features,likely inhabited by humans

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R7R44 TIL during the 2012 London Olympic NBC aired a promo for the Today Show congratulating Missy Franklin on winning the gold medal in the 100-meter backstroke minutes before the network aired the time-delayed footage of the event.
YXDZ TIL A 15-year-old liver transplant patient is the first person in the world to take on the immune system and blood type of her donor.
OGGy4 TIL There's a medical procedure that involves inserting a catheter into an artery in the leg to reach the brain. a dye is then injected and an x ray is performed. this is done on no/local anasthesia. it's called a cerebral DSA
4XM5w TIL that in 2008, Electronic Arts caused a traffic jam in London, England, when their marketing team attempted to give away $40,000 of free fuel from a gas station. The promotion ended early and only $22,000 of fuel was given away.
pR8p TIL that a cats purr can promote the healing of their broken bones or torn muscles, this is due to the sound frequencies of the purr (which is around 25-150 Hertz). This can also improve their bones density.