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TIL that Dragonflies are older than dinosaurs and used to have a wingspan of 2.5 feet

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XELX TIL that the first sports bra was created by hooking two jockstraps together. It was originally called the “jockbra.”
gMblW TIL about Boris Weisfeiler, a Soviet-born American mathematician who was kidnapped in 1985 — allegedly for his Jewish faith — by the Colonia Dignidad, a Nazi commune in Chile. His fate remains unknown, as several witness have claimed to have seen him in the Colonia even decades later.
NXVJJ TIL: that in 1995 Bogota, The mayor Antanas Mockus employed traffic mimes to shame people breaking laws. And they managed to significantly reduce violation in the most dangeour urban area of Latin America.
9YlJr TIL if any crimes occur at the McMurdo station in Antarctica, the US attorney in the district of Hawaii handles the case
QNbwa TIL that when determining the atomic mass of each chemical elements, the English chemist William Prout deduced that the building block of the atom is primarily the atom of Hydrogen. Though Prout’s hypothesis was not entirely accurate, because atom's building block is the proton.