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TIL the Moche civilization of Peru developed a batteryless electroplating technique during the first few centuries AD to deposit a thin layer of gold over copper

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Lpbv TIL that experimental band The Flaming Lips recorded a 24 hour long song called “7 Skies H3” As well, the only version available for purchase is a $5000 hard drive copy of the song encased in a real human skull.
14PO TIL the blanket octopus is known to rip off the venomous tentacles of the Portuguese man o’ war to use them as weapons
WNKY TIL that sudden testicular pain can be a symptom of testicular torsion. It occurs in about 1 in 160 males before 25 years of age and if not treated within 6 hours, can result in loss of the testicle.
WklMA TIL For years, NFL ignored concussion evidence
Lk06Z TIL there's an archaic Cyrillic character, ꙮ, called the "Multiocular O", only attested in a manuscript in the word for "multieyed seraphim"