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TIL the standard measurement of the kg for the past 127 years is ‘Le Grand K’, a platinum and iridium cylinder that was forged in 1879 and currently resides inside a vault in France.

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j6rlv TIL of the Transfermium Wars, a controversy between US and Soviet scientists about the names of super-heavy elements. The final outcome was to name element 104 as "rutherfordium", element 105 as "dubnium" and element 106 as "seaborgium", which more closely matched the US than the Soviet proposals.
BQe TIL Cannabinoids, like those found in marijuana, occur naturally in human breast milk
JYkDQ TIL during the 2014 Groundhog Day festival, New York mayor Bill de Blasio dropped the Staten Island Zoo's weather-predicting groundhog on its head, killing it -- which was then covered up by zoo officials who claimed Staten Island Chuck had "died of natural causes"
Xr4Q TIL that larger birds such as geese fly in “V ” formation, because the whole flock adds at least 71% greater flying range than if each bird flew on its own. Also, the geese honk from behind to encourage those up front to keep up their speed.
rN9O1 TIL Goats have rectangular pupils, the weird shape helps them stay aware of their surroundings.