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TIL a Puget Sound orca called L25 is the oldest known living wild orca in the world. While her exact age is uncertain, she's estimated to be anywhere from her mid-80s to her mid-90s. In 1976 when the Center for Whale Research's census began, the original estimate for L25's birth year was 1928.

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mxjWE TIL that Genghis Khan had more than 1,000 affairs during his lifetime, making every 1 in 200 men related to him...
WkkMY TIL During his 2009 TED talk, Bill Gates opened a jar of mosquitoes saying “Malaria is spread by mosquitoes. I brought some… I’ll let them roam around. There is no reason only poor people should be infected” & waited for ~a minute before telling the audience that the bugs were malaria-free.
x65Bg TIL there is an University in Pyongyang, North Korea known as PUST that teaches entirely in English. It also operates its own social media accounts. Foreign academics can apply to volunteer to lecture at the University in-person or online.
MeggK TIL of the Benjamin Franklin effect that causes people to like someone more after doing them a favor. When Franklin asked his rival for a rare book and returned it with a note of thanks, Franklin’s rival spoke to him with great civility and offered help, leading the two men to become good friends.
QJNVX Finland’s Lapland is home to over twenty thousand reindeer, but with thousands killed every year due to vehicle collisions in the dark, herders now cover the animals’ antlers with a harmless fluorescent paint that glows in the light of oncoming cars but is otherwise invisible. both female and male reindeer in Lapland grow antlers, which they shed in the spring, so a new coating is reapplied in the fall.