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TIL octopuses deliberately throw shells at each other. Researchers found that 66% of throws were made by females, often in response to mating attempts. For a creature with no thumbs or rotator cuffs, they had a 17% hit rate.

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ZpJmD TIL about the Romanian Bridgehead. When Poland was attacked from both sides by the Nazis and Soviets, Romania offered a safe escape route for Polish troops and leadership, even allowing the transfer of the Polish gold reserves to the West.
XErp8 TIL that 2 students were arrested and sentenced to 7 years in prison, in Portugal for "raising a toast to freedom" in 1960. The news of this inspired British lawyer Peter Benenson to lay down the foundation for one of the largest human rights organizations in the world, the Amnesty International.
X67E TIL that the first Australian woman to be sentenced to life without parole stabbed her partner, skinned him and then tried to feed him to his children.
yWgw TIL there is an island in the Pacific of 300 people, no longer than 750m, where a Polynesian people live at a population density equalling that of Bangladesh. The fact that the island’s ecosystem hasn’t been negatively impacted has attracted the attention of sustainability scientists.
Xj0P TIL Steve Crohn was one of the first studied cases of HIV immunity. His Immunity was due to a mutation in the CCR5 delta-5 receptor of CD4-t*cells, this prevented the virus from “entering” the immune cell. He committed suicide at the age of 66 after most of his friends died from the disease.