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TIL that after the attack on Pearl Harbor, Canada declared war on Japan before the United States did.

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wkDW TIL that until 2007, it was completely legal for women in New Zealand to rape or sexually abuse children, being that no laws existed which legislated against such crimes.
x6Pmg TIL (while attempting to find the correct plural of "platypus") the correct Latin plural of Octopus, Platypus, and Rhinoceros are Octopodes, Platypodes, and Rhinocerotes (3rd declension). In this short posted video, "Hippopotami", "Brontosauroi", and "Walrussen" are also discussed.
GYB6J TIL the idea of black holes was first proposed in 1783 by John Michell, calling them "dark stars" and proposing a method to detect them by looking for star systems that showed the gravitational effects of two stars, but only one star was visible, which is indeed how scientists look for them today
8evBG TIL that HP still sells the HP12C, a 40 year old financial calculator which had a chip named R2-D2 and was designed to have a battery longevity of over 12 years
87PK TIL that it is possible for human babies to learn sign language well before they are able to speak, and that this has been shown to boost language skills later in life.