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56

TiL - Women used to turn their teeth black with a solution of iron filings and vinegar.

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LLZ TIL that when Rudolph Diesel produced his engine in 1896, he assumed that it would run off of vegetable and seed oils - especially hemp.
0dRKR TIL Japan is the only country in the world to use 100v AC, and that the frequency varies (50hz in the east, 60hz in the west) because they bought equipment from two different manufacturers/countries
51EP TIL there’s a cheese from Sardinia with maggots in it that’s outlawed by European Union food hygiene-health regulations, however, it’s still made and sold on the black market.
RO1l TIL of 15 year-old World War One Royal Navy officer Wenman Wykeham-Musgrave, having survived being torpedoed on three different ships within one hour, all of which sunk, swimming to each after abandonment of the last. Musgrave went on to survive the war and live a full life until 1989.
epW1g TIL There is a deep-sea fish which has a transparent head with eyes pointing upwards to see prey. It was discovered and described in 1939