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TIL that forty years passed from the date of Jesus' crucifixion before any written account of his life and teachings was put to paper.

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0wDP1 TIL The calves muscles help pump blood, The body is engineered so that when you walk, the calf muscles pump venous blood back toward your heart. The veins in your calf act like a reservoir for blood your body does not need in circulation at any given time.
XErWk TIL about "The Demon Core", a mass of plutonium that was responsible for the death of two scientists on two separate occasions.
KORV6 TIL in 2013, a wild male tiger walked right up to a tiger enclosure at a zoo in India. Attracted by a captive female, the zookeepers let him in through a door in the enclosure. He stayed for a month, then escaped by jumping the fence, then returned a few weeks later.
ep7an TIL that a Peppa Pig episode was pulled off air in Australia as "inappropriate for Australian audiences" - in it a scared Peppa was told that spiders were "very, very small" and "can't hurt you". In 2016, a huntsman spider was videoed in Australia carrying a mouse up a fridge.
wA0P TIL that the Coelacanth and the Lungfish are more closely related to Mammals than to other Ray-Finned fish