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TIL the shape of a Pringle is called a Hyperbolic Parabaloid! The saddle shape allowed for easier stacking of chips. This also minimized the possibility of broken chips during transport.

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ANMw4 TIL about Arctic Hysteria (also known as Piblokto), a culture-bound syndrome that mostly affects the female Inuit population. Symptoms include tearing off clothes, running naked through the snow, screaming, throwing things, and performing other wild behaviors.
woXNP TIL the pet food company Chewy sends flowers and a card when a customer's pet dies. They will reimburse the purchase of unopened food and suggest it be donated to a shelter. They also offer the option of talking to someone about the grief of losing a pet.
8bEG TIL “Testify” comes from the Latin word testis, which means “witness”. In ancient Rome, two men taking an oath of allegiance held each other’s testicles, and men held their own testicles as a sign of truthfulness while bearing witness in a public forum or court of law.
PYvLZ TIL prior to 2002, psilocybin mushrooms were widely available in Japan and were often sold in mail-order shops, online vendors and in head shops throughout Japan; according to Japan's Health Ministry narcotics division, prior to 2002, "You can find them anywhere."
MPvW TIL that the Apollo 10 lunar module was jettisoned and is currently in orbit around the sun. It’s exact location is unknown but a group of amateur astronomers have been looking for it since 2011.