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TIL that caterpillar-damaged plants protect themselves by attracting parasitic wasps. Studies have shown that a variety of plants, when injured by herbivores, emit chemical signals that guide natural enemies to the herbivores.

Read more pubmed.ncbi.nlm.nih.gov

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GYo77 TIL that Nichelle Nichols the original Lieutenant Uhura in Star Trek was a recruiter for NASA from the late 1970's until the late 1980's and many of her new recruits were women or members of racial and ethnic minorities
y7Mp TIL: When General Lee met with his adversary, Grant, to surrender at Appomattox CH. Lee insisted upon his soldiers rights to keep their horses if they had one. Grant agreed understanding that if a former soldier was to return to the farm he had left, he’d need a horse to put the next crop in with.
nmj9 TIL that Tigers and a type of African Jackal (Dhole) have a relationship where a lone jackal will trail a tiger, eating the large cat’s kills. The dhol will also warn nearby dhols of the tiger’s presence, in exchange for also alerting tigers to nearby kills. Tigers have trained hunting dogs.
X0AaE TIL about the Toyota War, which took place in 1987 in Northern Chad and on the Chad–Libya border. It takes its name from the Toyota pickup trucks, primarily the Hilux and the Land Cruiser, used to provide mobility for the Chadian troops as they fought against the Libyans
9YjBp TIL that Ian Fleming, intelligence officer and author of the spy genre series "James Bond", also wrote "Chitty Chitty Bang Bang".