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TIL of the Boy Scout Nuclear Science Merit Badge. The requirements to receive the badge include building a Geiger counter, planting irradiated and nonirradiated seeds, and visiting an accelerator (research lab) or university where people study the properties of the nucleus or nucleons.

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v1MOx TIL Capuchin monkeys at Brazil’s Serra da Capivara National Park, are 3,000 years into their own 'Stone Age'
AZm4 TIL Toshiba doesn’t want you to be able to fix your own computer/laptop and will slap you with a C & D if you share their service manuals.
jNXln TIL Union Pacific train operators once faced a real life "trolley problem" when 30 of its cars broke loose during a switching operation and headed at high speed without breaks toward downtown Los Angeles -- and decided to derail them on a side track, destroying two homes and injuring 13 people
PYd0E TIL Kim Il Sung University is one of two North Korean universities that presently accepts foreign students, the other being Kim Hyong Jik University of Education. It hosts approximately 100 exchange students a year, the majority from China. Alumni include Kim Jong Il, Chinese official Zhang Dejiang
jNBrR TIL: Richard Turner, world famous card mechanic won “Close-Up Magician of the Year” of 2014, fooled Penn & Teller on “Fooled Us” in 2017 and has a black belt in karate, has been legally blind since childhood. Dealt is a documentary about his life, career, and coming to terms with his loss of sight