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TIL sperm counts in the Western world have declined nearly 60% since the 1970s

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VQ44 TIL George Lucas allowed the band members of ‘N SYNC to make a cameo appearance in Star Wars Episode II: Attack of the Clones in order to appease his daughters. The footage was then cut out of the final version of the film.
nWVK7 TIL that The Beatles recorded German-language versions of their songs "I Want to Hold Your Hand" and "She Loves You" in 1964 made specifically for the German market.
WWpY TIL that in a 1000 person test IBM’s Watson found treatment options in 30% of cancer patients that doctors had missed. Part of Watson’s insight comes from his ability to read all research papers that are published each year, a feat no single person could possibly do.
v1m9K TIL that Rosemary Kennedy - little sister to JFK - developed violent moodswings at 23. Their father secretly took Rosemary to the notorious surgeon Walter Freeman, who used an ice pick to disconnect her frontal lobes. The lobotomy disabled her & she spent the rest of her life in an institution.
LkGAp TIL about the Salishan languages, a group of languages that lack nouns, using verbs to describe objects instead. For example, "bear" would be expressed using a verb that means "is a bear" in one of these languages.