› added 12 years ago

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TIL Paintball guns, before the game was invented, were used to mark cows ready for slaughter and trees ready to be cut down

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via reddit.com

oRlWr TIL Tinder has made a match in Antarctica.
QJlmp TIL Chinese mathematician Zhang Heng invented a seismometer in 132 CE which was used to detect an earthquake 250 miles away
NXYwM TIL about documents of Human-Orca encounters when SeaWorld used to let people get close to them. One of these stories mentions how an orca supposedly 'reverse trained' the Human, using the methods Orca trainers trained Orcas with, to pet them near their blowhole, because the human was hesitating to.
DQJvJ TIL that Boeing in 2012 used potatoes to test Wi-Fi on airplanes
kJ94g TIL heroin got its name by being "the hero's drug". It was used in the US Civil War as a painkiller for soldiers needing amputation by hacksaw.