› added 4 months ago

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TIL that serotonin, commonly linked to happiness as a neurotransmitter, has a surprising dual nature: it can be toxic. When injected into the skin, it causes severe pain and is a key component in wasp, hornet, and scorpion venom.

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b4gj TIL: Sesame Street reviewed exactly 45 years ago today quoted a professor saying it could flop because it wasn’t “structured” teaching. (PDF)
VMRBG TIL that Robert E. Lee greduated second in his class from the United States Military Academy. More impressive however, is that he recived no demerts his entire time there. To this day, that has never been matched.
V4om TIL there are at least 7,102 known languages alive in the world. And 23 of these languages make up the native tongue of 4.1 billion people.
9YjN7 TIL more than six billion different knot types have been identified by mathematicians and scientists since the 1800s.
XO78 TIL resistance of the super wealthy in Rome to paying taxes was one of the factors contributing to the collapse of the Empire.