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TIL Sheep breeders put chalk on the male sheep, which leaves a chalk mark on the females it’s mated with to monitor reproduction.

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DdWj TIL Regardless of bladder size, all mammals pee for approximately 21 seconds
9YdpM TIL the scientific name for the swordfish is Xiphias gladius. Xiphias is Greek for "sword", while Gladius is Latin for "sword". It's scientific name is "Sword sword".
aZvb TIL that by international agreement, topographic features on the planet Venus are named after goddesses and notable women
xyB7 TIL a 1,000 metre (3,281 ft) tall tower named Kingdom Tower is currently under construction in Saudi Arabia. If one were to stack the two original Twin Towers on top of one another and then place the Eiffel Tower in top of that, the resulting structure would not be as tall as Kingdom Tower.
7vEp TIL that the invention of fire made humans smarter because it made chewing and digesting food easier which lead to extra calories going towards nourishing their growing brains