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TilL about Peter Hagendorf a German mercenary who fought during the 30 years war and kept a diary. In it he casually describes the death of several of his children being assaulted and robbed by peasants and abducting women.

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0wg0p TIL African Wild Dogs vote on whether not to go on a hunt by sneezing. If a dominant pair sneezes first, then on average 2 additional sneezes will mean a hunt occurs. If a non dominant dogs sneeze first, then it typically takes 10 additional sneezes to sway the group to hunt.
4k45N TIL the US government in the 1930's tried to make a canal called the "Cross-Florida Barge Canal" that cut through the Florida peninsula to create a shortcut from the Gulf of Mexico to the Atlantic Ocean. It was going to have a series of locks like the Panama Canal. It was shut down by Nixon.
a8Jlo TIL Electronic Arts tried to launch a NBA video game in 2010, but the demo was so glitchy that they canceled the completed game. They were projected to lose up to $60 million due to the failure.
WkZe9 TIL many fingerprint scanners won't recognize the fingerprint of a dead person, as dead people's skin does not have the electrical conductance needed for such fingerprint scanners to work.
gM5Kb TIL the rainbow grasshopper (Dactylotum bicolor) is native to the United States, Canada and northern Mexico. When threatened, it exhibits aposematism or warning coloration to mimic brightly colored stinkbugs which lizards avoid. Studies show that birds find rainbow grasshoppers to be distasteful.