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TIL that females typically have more white blood cells and develop fewer infectious diseases

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pYa94 TIL: Mockingbirds can remember people who have threatened them and even start dive-bombing them if they see the person again. This finding is the first published account of wild animals in their natural setting recognizing individuals of another species.
pY1Ee TIL about a top secret WWII effort to create a horrible smell that spies could spray on German and Japanese officers to demoralize them and their troops. The project's code name was "Who, me?".
6DLQ TIL in 2001 Mattel sold a Harry Potter Nimbus 2000 flying broom that vibrated when kids rode it. They pulled it from stores after adult stores began selling the toy.
E1M9w TIL That Colgate once tried to expand their product line by making frozen dinners. "Colgate Kitchen Entrees" remains one of the worst brand expansion attempts in history.
eplZJ TIL that the Yakuza, Japan's crime organisations, have been involved in disaster relief efforts after major events like 2011 Tōhoku earthquake, often distributing supplies more efficiently than official channels. They are also known to open their offices as emergency shelters for the displaced.