› added 2 years ago

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TIL Venus rotates only once in 243 Earth days, and its year is 225 Earth-days long which means that one day lasts longer than a year.

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LkY1r TIL in 1913, a study was published on "the feeling of being stared at". It was found to be groundless, attributed to you being nervous about how you look when someone's looking at you.
AyG4 TIL the practice of selling one’s kidney for profit in Iran is legal and regulated by the government. It is estimated that 1,400 Iranians sell one of their kidneys annually. Iran is the only country in the world that allows this and has neither a waiting list nor a shortage of available organs.
kO187 TIL former Pittsburgh Steelers RB Rashard Mendenhall retired at 26 to become a writer. Today he’s a writer for HBO’s #2 show (2nd to Game of Thrones), Ballers.
gMde7 TIL tooth enamel is harder than steel. It's composed of mineralised calcium phosphate, which is the single hardest substance any living being can produce. Your tooth enamel is harder than a lobster's shell or a rhino's horn.
kODJd TIL Sea mines off the coast of North Vietnam exploded spontaneously all at once; the cause, not determined until decades later, was a solar flare