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TIL of "Hammer" Simwinga, a Zambian man who has helped stop poaching in North Luangwa Nat'l Park. Most villages near the park relied on poaching for income. Simwinga eliminated the need for poaching for 35K+ people in 60 villages by teaching sunflower planting, beekeeping, & sustainable farming.

Read more nationalgeographic.org

via reddit.com

oRNXL TIL during his bachelor's degree, Robert Andrews Millikan was asked to teach elementary physics course although he was studying classics. He accepts the offer, studies a physics book during a summer vacation and after 34 years he wins the Nobel Prize for Physics.
9YO9G TIL Tesla is making ventilators out of car parts. Tesla’s ventilator uses the Model 3 infotainment system to power a Model 3 vehicle computer, which in turn, controls an air flow manifold. A suspension air tank is used as a oxygen mixing chamber. Among other parts.
egeJ TIL: Burger King is called “Hungry Jack’s” in Australia, as the name was already trademarked by a takeaway food shop in Adelaide
pkoO TIL of Radithor, a health drink in the 1920s that contained radium and slowly killed its customers. But it didn’t cause a public health crisis because it could only be afforded by rich people (unlike cheaper, safer knockoffs)
K77B TIL the Maunder minimum was a period of record-low sunspot activity that lasted from 1645 to 1715. This period coincides with the Little Ice Age and suggested to scientists that solar activity plays a major role in Earth’s climate.