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TIL that we see wheels and turbines spin in the opposite direction due to the "wagon wheel effect," an optical illusion resulting from high speed

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Zjm4 TIL that the 2006 film The Ghost and The Darkness, about man-eating lions, was based on the real Tsavo Maneaters - two lions that killed 135 people in 1898.
BggQk TIL that the name of Joanna Dark, the protagonist of the Perfect Dark video game series, is a play on the name of French heroine Joan of Arc (Jeanne d'Arc).
lokVr TIL that Jerri Blank's character in Strangers with Candy was based off of Florrie Fisher, a former addict and prostitute turned motivational speaker who was a cult icon for her outlandish stories shared with high school students in the 1960s and 70s.
yV7me TIL GPS, despite being free for global use, costs around $2 million a day to operate and maintain. This budget covers satellite launches and system upkeep, funded through American tax revenue.
EBl0 TIL that there are a lot of political graffiti in Pompeii that shows that political campaigns never really changed, such as “Vote X, he brings good bread”, “the thieves vote for Y” and “vote Z, this will save the public purse”