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TIL a healthy coral reef will sound like popcorn popping

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4k8pa TIL Dr. Seuss pronounced his pseudonym "Soice" (rhymes with "voice"). It was his mother's maiden name, so he should know!
GAvxg TIL that in 1979, a song titled “Ready ‘n’ Steady” appeared on a Billboard chart. However, the song was never actually released, and for years, its existence was unconfirmed. In 2016, a researcher used old copyright records to find the record, giving it its first known public exposure.
dQmQ TIL the term “Glory Hole” originated in glass blowing. It is the hole providing access to a furnace used to reheat a piece of glass in between steps in the process.
VMZEG TIL the term "Caucasian" was first used for skull traits, not skin color. Caucasian populations were thus not exclusively "white," but ranged in complexion from white-skinned to dark brown.
vwKD TIL a serial killer called the Grim Sleeper killed at least ten women from 1985-2007; the LAPD knew of the string of murders but did not find them urgent because the crimes were classified as NHI - “No Human Involved”