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TIL that in 1973 NASA used the song Paralyzed, by the Legendary Stardust Cowboy, to wake up a space crew. They were so disoriented by the shock that the song was blacklisted from ever being used for that purpose again

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8O4a TIL of black rain, a form of precipitation caused by the immediate aftermath of a nuclear detonation, in which the water is black and sticky due to radioactive materials in the air.
6E4pZ TIL A surge protector's ability to protect your equipment degrades over time and should be replaced every couple years.
79DX TIL that IKEA has previously hired private investigators to track down personal information for individuals who gave them poor reviews
8KeG TIL The JSON Software License is non-free because it has a clause mandating: “The Software shall be used for Good, not Evil”
wL1WY TIL about Kelly Pilcher, a young woman from Texas, who needed to have a rib removed. After the surgery succeeded, she took her removed rib to a knifemaker, and had it made into a castration knife.