› added 9 years ago

80

TIL that the “Pinky Promise” originally indicated that the person who breaks the promise, must cut off their pinky finger

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8BoX TIL an electric bell has been running off the same battery since 1840 and is still working today.
Yj9r TIL Bette Nesmith was a typist in the 1950s. She invented liquid paper because she was fed up with having to scrap a whole page due to a typo. Later she sold her company for over 40 millions.
Wkk48 TIL the accusations of Facebook secretly eavesdropping on their users’ conversations to better target advertising to those users was started by a mass communications professor who later denied the claim
8ag58 TIL Kangxi and Qianlong had the longest reigns in China's history, both lasting over 60 years. Under Qianlong, the population grew from 242 million in 1735 to about 300 million in 1799 or about a third of the world's population, and Beijing was the world's biggest city with a million inhabitants
bnd9 TIL that there is a form of insomnia that is progressive and 100% fatal. Sufferers gradually lose the ability to sleep until it is completely impossible. After several months of no sleep, they become unresponsive, mute, and eventually die.