› added 9 years ago

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TIL that you can undo sent emails on Gmail, meaning the other person never has to see them

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via reddit.com

KOLXE TIL the House of Grimaldi has ruled Monaco since 1297. By law the reigning Prince or Princess must bear the surname of Grimaldi and until 2002 a treaty between Monaco and France stated that if the reigning Prince failed to leave dynastic offspring, sovereignty would revert to France.
loPjA TIL about a Kentucky man who wanted to deter illegal fountain-divers, so he put up a sign saying "Danger! Water Contains High Levels of Hydrogen!", hoping to exploit people's lack of knowledge.
5YNwn TIL during WW2 after the Nazis had taken over France, Churchill made the decision to attack the French naval fleet rather than let it fall into enemy hands. The bombardment killed nearly 2,000 men. France then severed all diplomatic relations with the UK and even mounted several retaliation attacks.
rRWyW TIL that in Mexico, Belgium, Germany, and Austria, the act of escaping from jail is not illegal in and of itself, because it's human nature to want to escape
7LXX TIL of Brryan Jackson. He was purposely injected with HIV-tainted blood when he was 11 months old, by his own father. He developed AIDS by the age of 5 and death seemed certain. Today, he is over 20 years old and the virus has been undetectable in his blood for over five years.