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TIL Gladiators carried out product endorsements in the arena. Ridley Scott left this tidbit out of the movie “Gladiator” for fear that this would seem anachronistic.

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gMjAA TIL blood type distribution varies by country, for example Albania has 10% AB+, Chile has less than 1%, most common blood worldwide is O+ but India's is B+
oBoQR TIL about Leo, an early socio-interactive robot built in 2002. Leo was programmed with psychological theory and spatial scaffolding. It is able to communicate by perceiving expression, gesture, speech, and thus responds appropriately with equal expression, gesture and speech.
N71OQ TIL of the Red Ghost, a camel that wandered the Arizona desert for 10 years with a human skeleton strapped to its back
LKGQ TIL of Robin Williams’ bond with Koko the gorilla. He made her smile for the first time in 6 months after her lifelong gorilla companion passed and she became visibly upset when she heard the news of Williams’ death
xrO1 TIL A recipe found in a 1,000-year-old medical text book has been shown to kill methicillin-resistant staph.