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TIL that Kruger National Park had a coalition of 6 Sibling Male Lions that conquered a territory of almost 170,000 acres (7 times larger than Manhattan). They killed more than 40 lions and cubs in around a year. The coalition lasted for around 16 years.

yQrmp TIL Despite of Nazis having a reputation for persecution of homosexuals, Ernst Röhm a founding father of Nazi party in Germany was an open homosexual. At one point he was ousted but asked to join back. Hitler was aware of his homosexuality and used intimate 'du' when referring to him.
lovrV TIL that the term and concept of "jay-walking" was introduced in the 1920's by the auto industry as part of a propaganda campaign to claim the roads for cars and shift the blame in accidents from cars to pedestrians. At the time "Jay" was a slur with a similar meaning to "redneck" or "hillbilly."
0dkwA TIL Males in most animal species die earlier than females because their smaller Y chromosome is unable to protect an unhealthy X chromosome
5VV0n TIL French artist, Yves Klein, sold a series of non-existent spaces in exchange for a weight of pure gold. Some accepted his offer. In 1959, almost 60 years after his death, a receipt he wrote to prove ownership of his invisible artworks sold for $1.16 million at Sotheby's auction house in Paris.
Bg4nL TIL when exposed to chilly weather, tall structures like towers and skyscrapers can shrink down several inches, but when things heat up they extend back to their full size.