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TIL that aluminium foil was invented in Switzerland, and the first industrial use was to wrap Toblerone chocolate bars

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via reddit.com

m1GLy TIL that before the invention of electric light, most Europeans had two phases of sleep, awakening late at night before sleeping again, called biphasic sleep
LvYp TIL that a photographer taking pictures of air pollution unknowingly captured pictures of a couple committing suicide
Y7eyx TIL the Blanket octopus has one of the most extreme difference in sizes between sexes known in any animal near its size or larger. Females may reach 2 m (6.6 ft) in length, whereas the males are 2.4 cm (1 inch). To mate, males wrench off specialised arms full of sperm, which are kept by the female
5JRk TIL that Donald trump proposed a onetime tax of 14.25% on individuals and trusts worth $10 million and up in 1999 that would eliminate national debt.
J1ggB TIL of Joseph Samuel, who was hanged thrice and lived.