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TIL ecologist Suzanne Simard discovered that trees use underground fungi networks to communicate and share resources, uprooting the idea that nature constantly competes for survival.

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8abAa TIL there is a colony of wild wallabies living in Hawaii. In 1916 they were flown into Oahu to be a part of a private zoo, but escaped after neighborhood dogs attacked (and killed one of) them.
VMyDB TIL: Sushi Parasites have increased by 238 times since 1970s according to the University of Washington. Scientists said this is likely due to humans recovering the seal, sea lion, and whale populations under Marine Mammal Protection Act which allows the parasites to fester.
jN0kX TIL there are more trees on Earth than stars in the Milky Way. A study led by Yale University researches with scientists from 15 different countries arrived at an estimate of 3,000,000,000,000 (3 trillions) of trees, by combining on-the-ground study with satellite imaging.
GKV1 TIL that the Dance Fever of 1518 was a month-long plague of inexplicable dancing in Strasbourg, in which hundreds of people danced for about a month for no apparent reason. Several of them danced themselves to death.
eoNn TIL that in 1954, the CIA launched a covert operation that overthrew the democratically-elected leader of Guatemala and replaced him with a right-wing authoritarian president, beginning over four decades of civil war and political repression