1) 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.

2) The insurance industry is one of the oldest industries in the world, with roots dating back thousands of years.

3) The fingerprints of koalas are so similar to humans that they have been mistaken at crime scenes.

4) Mountains are important water sources, as they capture and store precipitation, feeding rivers and supporting ecosystems downstream.