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TIL About Dynamite Guns. Briefly in military use in the late 1800s, they fired shells of gelatinized dynamite using compressed air much like a potato cannon. They fell out of favor due to their complexity and inaccuracy.

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1aNxP TIL the writer of the campy and super fun 1960s "Batman" also wrote the campy and super fun 1980s "Flash Gordon" movie
wL9Y6 TIL the Hawaiian Islands span the distance of 1,523 miles (2,451 km) from the Big Island of Hawaii in the southeast to the Kure Atoll in the northwest. This makes Hawaii the world's longest island chain.
AQan TIL Secret Service agents lived in Chelsea Clinton’s dorm, and posed as students, while she was an undergrad at Stanford
0da1A TIL electroplating, a sophisticated technology used in microelectronic fabrication, was invented by Indigenous Americans in Peru around 500 CE. Europeans only invented this technique around 1800.
6MrY TIL that the “Vulcan nerve pinch” concept on Star Trek (1966) was invented by Leonard Nimoy when he and the series’ writers were trying to figure out how an unarmed Spock could overpower an adversary without resorting to violence.