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TIL- A massive nuclear disaster occurred in Ciudad Juárez, Mexico when a decommissioned radio therapy machine used for cancer treatment was disassembled by a cleaning crew. They then delivered the cobalt 60 to a junkyard which then used contaminated metal in construction projects around Mexico.

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Br8Ak TIL that the world's oldest mouse, Yoda, reached the age of 4 years in a pathogen-free environment at the University of Michigan, living with his cage mate Princess Leia. 100-year-old people are much more common than 4-year-old mice.", said his lab director.
RPvj TIL the peace symbol is comprised of the semaphores (flag symbols) for N and D, representing the Campaign for Nuclear Disarmament
7r4ep TIL: Due to their thick, muscular tail, Kangaroos cannot walk forward or backward. They can only jump forward.
a8vWL TIL: Your Backyard Birds are Living Dinosaurs! Despite their small size and fluffy feathers, birds are the last surviving group of dinosaurs, stemming from the theropod dinosaur lineage.
NXY8E TIL The Potlatch Ceremony, where Native leaders gave away or destroyed valuables during a great feast, was banned from 1885 to 1951 in Canada yet persisted in secret during that time