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TIL of the Darvaza gas crater, AKA the Gates of Hell, a crater in Turkmenistan that has been on fire since the ‘80s. Engineers wanted to prevent the emission of poisonous gases by igniting them, but reportedly underestimated how much there was.

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e0R4b TIL Philips couldn't use their name on any of their products in the United States, because their name was too similar to Philco. So, they decided to name their US products "Norelco" until 1974, and then "Magnavox" until 1981, when Philps bought Philco.
pY6jp TIL that Ozzy Osbourne is a genetic mutant. The musician has several gene variants that "we've never seen before," said geneticist Nathaniel Pearson, who sequenced the rocker's genome, including variants that could impact how Osbourne's body absorbs methamphetamines and other recreational drugs.
8a7w8 TIL Foucault put forward the view that the homosexual category did not exist until the 19th century. Although same sex relations have been practiced throughout history, people who practised homosexuality were not classified as homosexuals, and did not think of themselves in terms of sexuality.
5V1Mk TIL Naphthalene, a chemical used in mothballs, can cause poisoning through ingestion, inhalation, or skin contact. Termites can also produce naphthalene to protect their nests. Symptoms of exposure range from headaches and nausea to hemolytic anemia, where red blood cells are destroyed.
9Ylx7 TIL blue raspberry flavor is based on a real fruit called Whitebark Raspberry, which bears blue/black fruit.