1) Sloths only poop once a week, and when they do, they lose about one-third of their body weight.

2) The oldest known musical instrument is a flute made from a bird bone, estimated to be around 43,000 years old.

3) The first modern health insurance policy was introduced in Germany in the late 19th century.

4) Aztec mythology, originating from ancient Mesoamerica, includes deities like Quetzalcoatl, Huitzilopochtli, and Tlaloc. It explores concepts of creation, sacrifice, and the cyclical nature of time, with intricate cosmology and rituals forming a significant part of Aztec religious beliefs and practices.