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TIL Wifi exists because cellular networks didn't license the frequency band (2.4 GHz) since the frequency is subject to interference, allowing researchers to experiment with the unlicensed band and develop the technology

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EgAX TIL Jackie Kennedy undertook a historical renovation of the White House that sought to replace the cheap furniture bought by the Trumans with pieces of WH historical furniture. She famously asked the Eisenhowers to give back the Washington era China they had taken home after leaving office.
5YOw8 TIL there is a certain temperature and humidity at which a human can't cool down, and will die from the heat of their own metabolism
GA177 TIL that The Beatles Animated Series (1965-1967) was the first weekly television series to feature animated versions of real, living people.
78oXb TIL that Americans actually started using the dating system (mm/dd/yyyy) from the UK who used it before the 20th century.
8eKlG TIL that life expectancy at birth probably averaged only about 10 years for most of human history