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TIL Air bags are not inflated from some compressed gas source but rather from the products of a chemical reaction. The chemical at the heart of the air bag reaction is called sodium azide, or NaN3.

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N7gZN TIL of Marcel Tyberg, a Viennese composer who, because of his 1/16th Jewish heritage, was killed at Auschwitz in 1944. Before his capture, he entrusted his scores to a close friend. The scores ended up in the US but were untouched for decades. Within the last 10 years, his music was rediscovered.
M7YWW TIL The largest private library in France belongs to anti-liberalism philosopher Alain de Benoist.
DQpEY TIL of The Blackwood Brothers, a southern gospel quartet. In the 1950s, after some members died in a recreational plane crash, the group was the first to customize a bus to make travel spacious and comfortable for entertainers, thereby inventing the customized "Tour Bus".
W7aK8 TIL: Algeria during the 1840 War, French troops had a drink prepared with coffee syrup and water. The drink was brought to France, it's called a mazagran named after the town. In the 1990s, Starbucks and PepsiCo made mazagran carbonated, but failed, leading to the creation of the frappucino.
Ynjd TIL that after needing 13 liters of blood for a surgery at the age of 13, a man named James Harrison pledged to donate blood once he turned 18. It was discovered that his blood contained a rare antigen which cured Rhesus disease. He has donated blood a record 1,000 times and saved 2,000,000 lives.