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TIL that Cracker Jack is considered by some food historians to be the first junk food. It was introduced in 1896 along with the slogan “The more you eat, the more you want.”

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GgBQ TIL Chlorine trifluoride is a substance so flammable that an accident resulted in 900 kg burning straight through a foot of concrete and three feet of gravel. Cloth, wood, water, sand, and asbestos all make it burst into flames. The only way to stop it is to wait for it to burn itself out.
8elRG TIL there was a Bubonic Plague pandemic that was considered active from 1855 to 1960. It killed 12 million people in China and India alone.
kJPA7 TIL that squirt guns predate the Civil War. Would be General Sherman once said “Why, you might as well attempt to put out the flames of a burning building with a squirt-gun.”
l78NK TIL about the church of the Flying Spaghetti Monster that practices Pastafarianism. Said monster created the universe while drunk. It's version of Heaven includes a beer volcano and a stripper factory.
Brdxr TIL that depictions of knights fighting snails were common in medieval texts. And no one really knows why.