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TIL what chaos can occur when coal burning is not regulated: The 1952 Great smog of London

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R59ma TIL that the CIA's Directorate of Science & Technology created the lithium-ion battery in the mid 1960s and declassified it for public sector use
76Yp TIL A cat, named Pwditat, approached the family dog Terfel and seemed to sense that he couldn’t see. Using her paws, she coaxed him out of his basket that he had been afraid to leave and led him out into the garden. Today, the unlikely pair is inseparable as she serves as Terfel’s seeing-eye cat.
16oEW TIL when Gelje Sherpa spotted a Malaysian climber struggling in the 'death zone' on Everest, he ended his client's bid to the summit to rescue the climber. So Gelje strapped the climber to his back & carried him down 600 meters taking about 6 hours. Another guide then helped him complete the rescue.
P17Dn TIL that the planet's average temperature compared to today was just 6°C (11°F) lower, during the last ice age, and 4°C (7°F) higher, during the age of the dinosaurs. "In climate terms, a change of just a few degrees is a big deal." (Bill Gates, 2021)
16Kb7 TIL one of the possible inspirations for the Sheriff of Nottingham from "Robin Hood" fame is a man called Philip Marc, who was so hated that a clause in the Magna Carta was specifically written remove him from his position.