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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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O9vg TIL the highly expensive paint “Ultramarine blue” is named not after it’s ocean-blue color, but instead means “from beyond the sea” (i.e. imported from Asia)
P11BE TIL that the Voyager 1 Space probe launched by NASA in 1977 has traveled over 14 billion miles away from earth as of 2022.
grMQL TIL that scammers intentionally use bad grammar to weed out people who won't be falling for thier scams.
XgR6 TIL The day after Robin Williams’s suicide, the National Suicide Prevention Lifeline fielded the greatest number of calls in its history.
NXb9e TIL: A Stanford study showed that most humans are aroused by robots. Participants were hooked up with electric sensors and were asked by a robot to touch it in 13 areas. 90% showed arousal when touching the butt or crotch. The research has implications for artificial systems and robot design.