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TIL snake oil was introduced to the US by Chinese laborers who helped build the Transcontinental Railroad. Derived from the Chinese water snake, snake oil was rich in the omega-3 acids that help reduce inflammation and was quite effective, especially when used to treat arthritis and bursitis.

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PoyO TIL that If two pieces of the same type of metal touch each other in space, they will bond and be permanently stuck together
GYpQ1 TIL during the Summer of 1858 London England dealt with "The Great Stink". A heat wave combined with an inadequate sewer system made the area reek of human waste for weeks. It lead to an overhaul of the sewer system that took 17 years to complete
j6x6v TIL the first Native American to head the Bureau of Indian Affairs was Ely S. Parker in 1869, he was also the only Native American to head it until 1966.
kO5X5 TIL the gopher tortoise is a species of turtle native to the southeastern United States. The gopher tortoise is seen as a keystone species because it digs deep burrows that provide shelter for at least 360 other animal species, often preserving their lives during conflagrations.
JMOl TIL American eggs would be illegal in a British supermarket because they are washed and British eggs would be illegal in a US supermarket because they are unwashed