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TIL The invention of the original silly string was accidental. Was originally intended as a spray-on instant cast for fractures.

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OGVnY TIL onions are toxic to dogs. They can cause hemolytic anemia and result in death. A 45-lb. dog would only have to eat one medium to large onion to experience dangerous toxicity levels.
7rdRb TIL that Comic Sans is one of the best fonts for people with dyslexia
0wJnN TIL that during the Apollo 15 mission, astronaut David Scott carried out a version of the classic Galileo's hypothesis by dropping a feather and a steel hammer at the same time on the surface of the moon. The objects took the same amount of time falling and there by proving the hypothesis.
xV1Qk TIL about the Gnostic Gospels. Early Christian texts that claim the creator god from the old testament is actually the devil and salvation can only be reached through a personal relationship with an abstract higher power.
loab1 TIL that a video game to help children with ADHD was approved by the U.S. Food and Drug Administration (FDA) called EndeavorRx.