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TIL about Mary the Jewess, one of the first alchemical writers, living between the first and third centuries AD. She is credited with the invention of several kinds of chemical apparatus and is considered to be the first true alchemist of the Western world.

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OGx5L TIL about Lemuria, a hypothesised continent existing between India and Madagascar due to Lemurs being found in India and Madagascar but not Africa.
9QxG TIL there is a man in India who claims he has gone the past 70 years without food or water. Once Indian military doctors kept him on 24 hour. Watch for 2 weeks and were unable to disprove his claims.
QJPGk TIL that in the late 1600s London was plagued by an attacker who would spank his victims with a rod, shout “Spanko!” and run away.
loyEA TIL the infamous "Year without a Summer" after the Tambora eruption in 1815 led directly to the invention of the bicycle, as people were forced to eat horses and other farm animals due to failing crops. They were called Laufmaschine or "dandy horses" and propelled by Flintstone-style foot power.
vP80R TIL about dry water, which is made by mixing silicon dioxide dust with water creating an air-water emulsion which is a powder.