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TIL that if you stood at the equator on Mars, the temperature would be 21C (70F) at your feet, where the Sun had warmed the ground, but 0C (32F) at the top of your head.

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Y1bA TIL In 1973, with the government-wide panic caused by Watergate, the CIA Director ordered all MK-Ultra files destroyed… A cache of some 20,000 documents survived, as they had been incorrectly stored in a financial records building and were discovered following a FOIA request in 1977.
5WX9 TIL that guests visiting Bill Gates’ $63 million home are given a pin to wear that automatically adjusts the temperature, lighting, and music of a room when they enter
mx5OM TIL that each worker bee will do a variety of jobs in her lifetime, which lasts about 4-6 weeks during the active season. As they age, their duties become riskier, and require venturing further from the hive.
0wjW1 TIL a man convinced more than 7 women to have sex with him by claiming to be a doctor and telling them they had a disease that could only be cured through sex. Some paid him for the sex. The case led to a law making obtaining sex through false info a felony.
5VOGP TIL Mars has two speeds of sound. Lower-pitched sounds travel more slowly on Mars than higher-pitched ones.