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TIL that our blood is red because it is rich in iron. Some animals have blue blood because it is rich in copper.

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kE1W TIL that the Swedish aircraft “The Viggen” is the only aircraft to get an acknowledged radar lock on the SR-71 “Stealth” plane
nEkb TIL In 1965 at age 90 and with no heirs Jeanne Calment sold her apartment to lawyer André-François Raffray on a contingency contract. Raffray, aged 47 agreed to pay her a monthly sum of 2,500 francs until she died. Raffray ended up paying Calment >$180,000; more than double the apartment’s value.
GZK1 TIL that several airline companies have or used to have policies where they refuse(d) to allow unaccompanied children to be seated next to adult males on their flights
Wk4DL Til: The "X" in Xbox game console refers to relying on the directx api and was choosen by the directx team at microsoft
poap TIL that Romans would post news and information along their road networks, especially where three roads intersected, known as a tri-via. Hence, tidbits of information became known as trivia.