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TIL common rocks and hardened clays can trap electrons in quantum pockets for thousands of years and release those electrons when reheated giving off light that can be used to date the rocks-( Thermoluminescence dating).

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k6LE TIL on 9/11, Canada commenced Operation Yellow Ribbon, in which it landed 239 U.S.-bound flights with 33,000 passengers in Canadian airports. Entire communities went on to provide the passengers with food and housing.
a8pWA TIL A man named Charles Osborne had hiccups non-stop for approximately 68 years, from 1922 to 1990. In 1922, he was weighing a hog for slaughter. He fell and busted a blood vessel in his brain resulting in him damaging a small part of the brain that inhibits the hiccup response.
OGLp7 TIL there are five main species of Pacific salmon commonly targeted by anglers (Wild-caught): Chinook (King), Coho (Silver), Sockeye (Red), Pink, and Chum. In the Atlantic, the Atlantic salmon is the only species and is typically farmed.
J1ZQ TIL that people with active hunting licenses in the US outnumber the active military of China by more than 6 to 1
DQY9J TIL that the oldest film on IMDb is "Passage de Vénus", a six second series of photographs of the transit of the planet Venus across the Sun on December 9th, 1874.