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TIL: A rattlesnake's rattle doesn’t work like a maraca, with little bits shaking inside. The rattle is actually a bunch of loosely interlocking segments made out of keratin.

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KYgGJ TIL That Jehovah’s Witness leader preaches that Babies are enemies of God
NXvQQ TIL No Kill Shelters aren’t actually no kill. They save 90% of their animals to be considered no kill.
Y79jP TIL that Earth’s oxygen is primarily produced by the ocean.
B9bk TIL that a woman jumped from a moving car after seeing a spider on her shoulder. The 9 year old passenger attempted to stop the car, hit the gas, and collided with a school bus.
LkPm0 TIL that in the 1940s, US funded doctors went to Guatemala to test STD treatments by deliberately infecting 1,308 locals between the ages of 10 and 72 with gonorrhea, syphilis, and chancroid, all without their informed consent. The US doctors gave only 52% of subjects any treatment. 83 died.