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TIL nematodes have no motile cilia and no flagella at all. Their spermatozoids move through ameboid motion.

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woDAW TIL that Pac-Man is the top selling arcade video game of all time. With sales of more than 400,000 units, it brought in $6 billion in revenue, or about $19.5 billion in 2024 dollars
XNxE TIL a high school principal in Florida hypnotized dozens of anxious students and athletes to help them relax. When two of those students committed suicide and one died in a car accident, the principal was charged with two misdemeanors and lost his teaching license.
b9BOj TIL that the 1972 Novel “The Day of the Jackal” showcased an easy method of obtaining a fraudulent British passport, which was later used by the IRA and the KGB. This loophole went unclosed until 2007, and may have resulted in up to 1,500 fake passports being issued each year.
nObY TIL that Lactase Persistence, the ability of humans to digest milk as an adult, is only common among Europeans and those of European ancestry, as a unique mutation. Most of the global population, including 90% of Asians and 100% of Native Americans, have some degree of lactose intolerance.
DNeY TIL Scientists have found that smiling men are less attractive to women because they may be judged to be more feminine and less dominant. However, men find smiling women more attractive.