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TIL acacia trees are flat-topped so that their lowest leaves are at the height of the tallest herbivores. They're also covered in thorns, have organs for housing/feeding vicious ants, release inedible compounds into their leaves when eaten, and use ethylene gas to warn nearby trees of danger

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WkXVL TIL that to avoid being conscripted by the Roman Army, some men would cut off their thumbs so that they couldn’t wield a sword. By the end of the fourth century, conscription avoidance was so widespread that Emperor Theodosius passed a law that forced the thumb-less to serve.
W5No TIL that the latin name for the american Plains Bison is “Bison bison bison”
4lra TIL until 1992 it was not required for electrical appliances in Britain to be sold with plugs at the end. Often the consumer had to attach it themselves.
Oom1a TIL, Shaggy's 'It Wasn't Me' was rescued from obscurity by a DJ in Honolulu who downloaded it from Napster since MCA execs were ignoring his requests for a copy
lNwB TIL in 1999 a man with Intractable hiccups was cured after having sex with his wife