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TIL By the time the last mammoth became extinct, the Great Pyramid of Giza was over 1000 years old.

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WeyN TIL there is a ruined city on 100 artificial islands linked with canals in the Pacific Ocean dating back to the 1st Century. Scientists do not know how they were constructed. Local legend says they were built by two sorcerers with the aid of a flying dragon.
nlAP TIL in 2010 a professor went on a diet consisting mainly of Twinkies to prove weight loss was from calorie deficit, not nutrition.
9YPRG TIL the Sirius star system is visible with the naked eye in the daytime sky given the right conditions
1aWBO TIL that Soviet Armenian swimmer Shavarsh Karapetyan was finishing a 12-mile run when he heard a bus crash into the water. He dove down 33 ft, and rescued 20 people, 1 at a time. He is an 11-time World Record holder, 17-time World Champion, 13-time European Champion and 7-time USSR Champion.
p8ok4 TIL in the European microstate of Andorra, the president of France serves as a co-prince (along with the Bishop of Catalonia), and is thus an elected monarch.