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TIL: There is 12,000 year old rock art in the middle of the Sahara Desert, created by humans when the Sahara was still green and full of life. Some historians believe the human experience of watching the Sahara dry up still exists today as the story of the Garden of Eden

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7rXwX TIL the British Voice Association conducted a highly technical acoustical analysis of Freddie Mercury’s voice based on interviews and recordings of his singing. Even after in-depth research, they were still unable to explain how Freddie physiologically achieved his incredible four-octave range.
J1Bxm TIL Roy Orbison's song "I Drove All Night" was first released on the Super Mario World-themed "White Knuckle Scorin'," a compilation licensed by Nintendo and released by MCA Records in 1991. Orbison recorded the song in 1987, it became a posthumous hit in 1992.
wP9W TIL that bananas are slightly radioactive because of their potassium content and the small amounts of the isotope potassium-40 found in naturally occurring potassium. The banana equivalent dose (B.E.D) of radiation is sometimes used in nuclear communication to compare radiation levels and exposures.
l7oAB TIL: The pull-tab for the pop-top can was invented in 1959 by Ermal Fraze; who, after forgetting a can opener at a picnic, was forced to open his beer can using a car bumper.
KYD7J TIL in 1997, rock band Cheap Trick re-recorded their second LP "In Color," with Steve Albini (of Nirvana's "In Utero" and Big Black fame) producing, seeking a heavier and rawer style. It was never released.