› added 10 years ago

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TIL that, at the embryonic stage of development, humans have two hearts. They eventually fuse into one but, theoretically, if they were kept separated they would develop into two functional hearts.

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via reddit.com

bGdN TIL that Pantheism is belief that God did not create the universe, but rather the universe is God
AD5yw TIL pirates wore an eyepatch to have one eye adjusted to the dark at all times. So, they could go below deck, swap the eyepatch, and instantly see in the dark.
M7k98 TIL the first games in the Pokémon series, Red and Blue, contained 150 Pokémon as a reference to Dunbar's number, the number of relationships a single human being can have and properly maintain.
OPL TIL Mark Twain came into and then left this world on successive Halley’s Comet appearances, and predicted that day as the date of his death.
WkN49 TIL that sleep literally cleans your brain. During slumber, more cerebrospinal fluid flushes through the brain to wash away harmful proteins and toxins that build up during the day.