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TIL Johnny Cash’s family refused to allow “Ring of Fire” to be used in an advertisement for hemorrhoid-relief

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gND7 TIL scientists have found evidence in Australia to support the theory that 3.5 billion years ago, a mega asteroid about 15 miles across slammed into Earth, triggering massive tsunamis and leaving craters bigger than many U.S. states
PgMO TILed that there is a permanent underwater laboratory called Aquarius that is owned by NOAA but used by NASA to study how people handle extreme living conditions. Residents are referred to as “aquanauts”.
LQpPp TIL When early talkie movies were being filmed, the microphones were all stationary. This meant actors were forced to move very little when speaking their lines. To compensate filmmakers used multi-camera setups which let them ‘move’ perspectives by switching shots.
QNQVE TIL All glass in Sweden is recycled in one building.
a44A TIL when people are electrocuted and thrown far distances, it is a result of sudden and violent muscle contraction and not the result of the shock. This has raised questions as to the actual strength and capabilities of the muscles in the human body