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TIL Underneath Beijing there is a city spanning 33 square miles called Dixia Cheng. It was built in the 1970’s due to rising tensions between China and the Soviet Union.

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Me51b TIL ABOUY The first large-scale battle fought by American soldiers in World War. And it happened in BELLA WOOD.
W7GM4 TIL that Astronaut John Young smuggled a corned beef sandwich aboard the Gemini III mission in 1965. He offered it to his crewmate mid-flight, but they had to stash it quickly as floating crumbs threatened to interfere with the spacecraft's instruments.
pYdDN TIL Mushrooms are the only non-animal food with Vitamin D and their vitamin D levels can be increased by placing them in the sun, just like humans
dp6d TIL mixing alcohol with diet drinks boosts intoxication 18% often backfiring for women who are particularly more likely to order them.
pXvZ TIL on Dec 27, 2004, for a brief instant, a couple of tenths of a second, an invisible burst of energy the equivalent of half a million years of sunlight shone on Earth from 50,000 light years away.