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TIL in 1962 a General Electric engineer named Nick Holonyak developed the first LED light bulb capable of emitting visible red light. The same bulb was used in the 1964 stop animation animated TV special Rudolph the Red-Nosed Reindeer for Rudolph’s bioluminescent nose.

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XEYBk TIL that almost all the people of Xanthos, an ancient Lycian city in Anatolia, committed mass suicide in two events 500 years apart to avoid capture, first by the Persians and then by the Romans
Yp6Z TIL the distance in between Blue Ball and Intercourse is 8.3 miles
ZwXB TIL that during the Qin Dynasty in China, government officials would use fingerprint analysis at a crime scene to help identify potential perpetrators, as they knew that no two people have identical fingerprints
R5ro7 TIL most adult dolphins don't have any taste buds and can't taste their food.
5YXoP TIL that in 1945 Walt Disney employed Salvador Dali to work on a short animation feature, that was stopped for lack of finances. 58 years later the project was revived and completed by Disney.