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TIL research scientists created a system to allow goldfish to drive a fish tank using cameras to track the fish bumping into walls to navigate towards a colored target for a reward. They changed starting positions and added decoys to prove the fish were navigating the environment not just memorizing

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e0l95 TIL about Casimir Pulaski, a Polish nobleman who saved the life of George Washington, became a general in the Continental Army, and is considered “the father of the American cavalry”. He died leading a daring charge against British forces during American Revolutionary War
4v0a TIL that scientists have found a complete skull from a human ancestor believed to be 1.8 million years old. Known as Skull 5, the skull is entirely intact and has a long face, large teeth and a small brain case.
kOPV4 TIL the makeup process for 'The Grinch' was so grueling, Jim Carrey had to meet with an expert who trained CIA operatives to deal with torture
OG8A1 TIL Chadwick (the discoverer of neutron) was a student of Rutherford (discoverer of proton) who was the student of Thomson (discoverer of electron).
ndLB TIL Before being killed in a drive-by shooting, Tupac Shakur was set to audition for the role of Mace Windu in the Star Wars prequels.