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TIL the US-Canada border is the longest international border in the world, and that Alaska's portion alone is about 38%.

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YRkP TIL American soldiers in WWI who were skilled at trap shooting were armed with model 1897s and were stationed where they could fire at enemy hand grenades in midair. This would deflect the grenades from falling into the American trenches and therefore protect American soldiers
wBl7 TIL Best Actor Oscar nominee Richard Jenkins, who played the dad in Step Brothers, drove a linen truck before becoming an actor. His boss was John C. Reilly’s father.
Kg7a Today I learned movie trailers used to come after the movie - “trailed” the movie but no one would stay after the film to watch them.
v1LrR TIL that engineers at IBM had to hand weave their memory 14KB in total for both control and redundancy of their flight computer in the SATURN V launch vehicle. Wire shaped inside the mesh represented a bit based on the magnetic field generated by the direction of current flowing through it.
VBKP8 TIL There are over 84 foreign heads of state that were educated in the U.S