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137

TIL about Jonny Kim who is a Navy SEAL, a Harvard Medical Doctor, and a NASA Astronaut

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78n4x TIL about the Memory of the World Programme: an international initiative launched to safeguard the documentary heritage of humanity. It includes, for example, the Gutenberg Bible, Symphony No. 9 by Beethoven, and humanity's first recordings of its own voice
Rrxa TIL “Turn the other cheek” actually means that you are demanding equality from an abuser…and not passively accepting assault.
4XRD6 TIL of the British Iraq Levies, a force mostly composed of Iraqi Turkmen, Kurds and Assyrians that fought alongside the Allies in WWII
Dkyp TIL Gray’s paradox (how can dolphins achieve their swim speed with their muscle mass) was solved by showing that their tails can change stiffness to keep high efficiency at different speeds.
YMXx TIL that one’s 180 degree angle of view above water is compressed to a 97° angle of view below water, similar to the effect of a fisheye lens. The phenomenon has a name, “Snell’s Window” we have all likely seen it.