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TIL Lake Michigan gets so clear after winter’s ice melts that you can actually see shipwrecks in the depths from the air.

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epAGb TIL that in the city of Cincinnati, Appalachians are a protected class.
GA9P4 TIL Maria Sabina was an indigenous medicine woman who introduced the western world to psilocybin. Her community's rituals were appropriated for power and fame, and she died in poverty.
D1l0J TIL The Eureka Moment (also known as 'Aha! moment) refers to the common human experience of suddenly understanding a previously incomprehensible problem or concept. Some research suggests it acts as a memory advantage. It is unclear where exactly it occurs in the brain.
vdN7 TIL that Mythbuster’s Grant Imahara built the R2-D2 in Star Wars Ep.1&2, and the Energizer Bunny
4kvK5 TIL that during WWII, the British MI5 used a "double cross system" to turn German spies into double agents, misleading the Germans about the D-Day invasion's location and timing, which contributed significantly to its success.