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TIL that atomic clocks in GPS satellites keep the slightly faster passage of time in space synchronized with clocks on Earth

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PYr4e TIL that "zombies" first appeared on movie screens in a 1919 French film called J’accuse. Director Abel Gance used soldiers on leave from fighting in Verdun to portray “an army of the dead.”
Brevx TIL there's a spider that can bridge lines over a river spanning up to 25 metres (82 ft).
ANxga TIL as Collector of the New York Customs House, Chester A Arthur earned more than the president by receiving a percentage of fines through the old moiety system.
65PZ TIL Navy SEALs brains are trained to alter the way the amygdala processes fear.
jbN TIL the song that opens for Blades of Glory is the song that Will Ferrell and John C. Riley perform at the end of Step Brothers.