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TIL Leonard Nimoy fought to get pay equity for Nichelle Nichols on Star Trek in the 1960s

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oLOR TIL billionaires in London are building “Iceberg Mansions” where most of the home is below ground.
Evyo TIL modern people get similar amounts of sleep to people from pre-industrial times, but the extra exposure to artificial light means we sleep worse
ne8AW TIL Japan has been wearing surgical-style masks since 1918 and has become a part of social etiquette. It is also worn as a fashion item and serve as defensive barriers due to social awkwardness. Total sales of disposable face masks amounted to ¥35.8 billion in 2018.
8e9RP TIL South American river turtles talk in their eggs. Research has found that turtles communicate at extremely low frequency that sounds like “clicks, clucks, and hoots” that can only be heard through ahydrophone (a microphone used underwater). These sounds even come from the egg before they hatch.
E1eaX TIL Ric O'Barry transitioned from training dolphins for the TV show 'Flipper' to instead advocating against industries that keep dolphins in captivity, after one of the Flipper dolphins died in his arms.