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TIL it was illegal to own bulk gold in the United States from 1934-1964

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8ryP TIL that a massive gas leak at a chemical plant in Bhopal, India in 1984 killed thousands of people n the surrounding town overnight and is considered the world’s worst industrial disaster
VMDND TIL that the Disney film Tangled (2010) is one of the most expensive movies of all time, which is unusual for an animated film. This is often attributed to the complexity in animating Rapunzel’s hair, however others point to the copious reworking in its troubled 14-year development period.
7WAb TIL there are helmets which remain completely invisible until the moment of impact.
AKOx TIL that in 1916, Nikola Tesla invented a unidirectional flow valve with no moving parts, by making the flowing substance resist its own movement.
woXAE TIL that a rat's jaws are built like an alligator's, and they can exert up to 7,000 pounds of force per square inch, meaning they can quickly bite down to the human bone.