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TIL that octopuses have three hearts and have blue-colored blood.

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j6Rbj TIL That the US Government invented the internet. The internet got its start in the United States more than 50 years ago as a government weapon in the Cold War. For years, scientists and researchers used it to communicate and share data with one another
YgmG TIL A British bomb detection dog in Afghanistan died from the stress of seeing his handler shot. They had set a new record for bomb detections and the dog was awarded the equivalent to a Victoria Cross.
nW9Gb TIL the world's largest human poo belonged to a Viking man in the 9th century and was on display in a British musuem. The massive turd was 20 cm in length and 5 cm in width, and was a result of the Viking man being sick as authorities found several hundred parasitic eggs in the poo.
8apY4 TIL catcher Dave Bresnahan threw a potato to trick a runner home. The minor leagues kicked him out and was later quoted saying "Lou Gehrig had to play in 2,130 consecutive games and hit .340 for his number to be retired, and all I had to do was bat .140 and throw a potato."
b9mQE TIL that Matthew Broderick (famous for playing Ferris Bueller) killed two women circa 1987 with his car by turning into the wrong lane and colliding with them head on. They died instantly.