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TIL Dropping molten glass into cold water produces a tadpole-like shape whose head can withstand hammer blows, but which explodes violently if it’s tail is damaged

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ADXon TIL that songwriter Esther Dean composed “S&M” for Rihanna, then was later cast as Cynthia Rose in the Pitch Perfect movies. This means in the “riff-off” scene in the first movie, Esther got to sing her own song, but as a completely different person. Full circle.
8aZWG TIL about the 71 teenage students, who were stationed to protect a South Korean HQ, despite having no experience in war or even firing a gun. The SK army didn’t think the NK army would attack that HQ, but they did. Those students, still in their school uniforms, held back the NK army for 11 hours.
GyJg TIL nails grow faster in summer.
b64r9 TIL the buzzing sound heard from a refrigerator is not from the motor, but from the refrigerant rapidly changing from a liquid to a gas and back again.
GYOvN TIL the Brookesia nana, a tiny chameleon found in Madagascar, was first described in 2021. Adult males and females measure 22 mm and 29 mm in total length, respectively. Unlike most other chameleons, they do not change colors or live in trees, but prefer to live on the forest floor.