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TIL Charcoal toothpaste whitens your teeth by sanding off your outer enamel

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QNNmM TIL male goats urinate on their heads to smell more attractive to females.
yVQpV TIL an earthquake occurred during the construction of the Golden Gate Bridge with a dozen workers trapped on top of one of the towers swaying 16 feet back and forth, while coworkers were throwing up on the deck.
5VDaQ TIL Bing Crosby’s “White Christmas” played on AFN radio in South Vietnam was the signal to Americans to begin evacuation in 1975
1EZX TIL the cuneiform writing system, which was used by humans for millennia, was indecipherable for more than 2000 years. A British army officer decoded the language in 1837 after recording and studying symbols he found in Persian cliff-sides.
J11r1 TIL that Marie Currie kept vials of radium in her pockets and next to her bed because she liked the glow. Now, more than 80 years since her death, the body of Marie Curie is still radioactive.