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TIL There are multiple types of Fireflies (Lampyridinae). The two most common types in North America are P. Pyralis, and the larger P. Carolinus

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ne87b TIL about PS General Slocum, a passenger steamboat that burned and sank into the East River in 1904. An estimated 1,021 of the 1,342 passengers died, the largest loss of life in terms of disaster in NYC until 9/11.
R7wWj TIL about Valonia ventricosa, the largest single-celled organism in the world. They can grow up to 5 cm in diameter
4XYWR TIL George Miller had his wife Margaret Sixel edit Mad Max: Fury Road. Miller said that she had never cut an action movie before, and he said if was edited by "the usual kind of guys, it would look like every other action movie we see." She went on to win a Oscar for her editing work in the film.
oByd8 TIL about Castrator barnacles, a species that feminizes male crabs after parasitically taking control of their reproductive physiology. This causes the male crab to grow ovaries, develop female behaviors, and care for the barnacle's egg sack as its own.
OJEL TIL Kevin Smith protested his own movie, Dogma, with a Christian group