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TIL Mr. Spock's Vulcan salute is taken from a traditional Jewish blessing ceremony.

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xVyd5 TIL that Sigurd Eysteinsson was a Viking leader of the 9th century. In 890, when he began the conquest of Scotland, he killed and decapitated a Scottish leader before hanging his head to his saddle. A tooth scratches Sigurd's leg, the wound became infected and Sigurd "The Mighty One" died soon after
kRR1 TIL a state in Italy existed successfully without any type of government for almost 400 years
RAm9 TIL on 8 September 2009, Marine Sgt. Dakota Meyer disobeyed a direct order from a superior to pull back from his position so he could rescue wounded soldiers from a firefight a mile away. He ended up going back five times, saved the lives of 36 soldiers, and won the Medal of Honor.
a8NPA TIL Aussie universities are so dependent on income from international students that they turned failing grades into pass grades and a student graduated with such poor English that a nurse misfed a patient dishwashing liquid because he couldn't read the label on the bottle.
ONKX TIL the appendix may not just be vestigial in humans; a 2007 study suggested that appendices serve as safe havens for “good bacteria” when illness flushes other bacteria from the intestines. Afterward, the useful bacteria can quickly repopulate the intestines.