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104

TIL of diamond fluorescence which effects about 30% of diamonds and causes them to glow under UV light.

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5YL48 TIL: The Psychic industry in the U.S. has grown 52% in the last decade, reached $2.3 billion in profits in 2019, and is one of the 30 fastest growing industries in the U.S.
60QQ TIL that during his Illinois senatorial campaign, Lincoln claimed he didn’t believe in racial equality between blacks and whites of any kind.
7rAyO TIL of Civilian Public Service (CPS), a US government program that provided conscientious objectors with an alternative to military service during World War II. CPS draftees fought forest fires, helped reform an abusive mental health system, and even acted as test subjects in medical experiments.
DYAp TIL people who think they wake up just before their alarm goes off have brain waves showing they were asleep. They may simply be remembering — or not forgetting — the moments just before waking, while forgetting the rest of their sleep.
4XZ7J TIL The longest congaline in the world is 119,986 people long and that record hasn't been broken since 1988