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TIL After a flood several years ago, a handful of bull sharks found themselves stranded in a lake on a golf course. Bull sharks are able to survive in fresh water and rather than this lake posing an issue for survival, the six sharks have thrived and even started breeding.

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8aXXG TIL in 1054, Chinese astronomers noted a bright "guest star" in Taurus that was visible in the daytime for 3 weeks, and didn't completely fade out for almost two years. The "guest star" was actually the supernova explosion that created the Crab Nebula, which is located some 6,500 light-years away.
rNwL0 TIL of Murderers Row, a group of ethnic minority boxers in the 1940’s, who were considered too dangerous to be given a world championship opportunity.
lZwV TIL of Washoe, a chimpanzee who was taught sign language. When one of her trainers returned after a while away Washoe was initially dismissive of her, but when the trainer signed “My baby died”, Washoe signed “cry” and mimmicked a tear running down her face.
p81PG TIL about Dorothy Louis Gage, L Frank Baum's niece, who died at the age of 5 months. Baum's wife was so distraught over Dorothy's death that she started requiring medical treatment. In order to cheer his wife up, Baum decided to name the protagonist of The Wonderful Wizard of Oz in his niece's honor
Olkg TIL 100% of the studies (n=74) concluding aspartame to be safe for consumption are funded by the Nutrasweet® industry, while 92%(n=92) of the studies claiming the compound to have the potential for adverse effects (e.g. head aches, brain tumors, seizures and mood disorders) are independently funded.