The current Kali Yuga is believed to be a period of darkness and despair, when the more materialistic and greed-based goals of humanity threaten to push the species to the brink of extinction. The Kali Yuga is considered the final World Age, a time of negativity and destruction.
The Theravada Buddhist “Visuddhimagga” mentions a 64-world cycle that periodically cleanses the planet and destroys humanity. The 64-world cycle is divided into eight cycles of destruction – seven by fire and one by water, which repeat seven times. The eighth cycle is a final apocalypse of devastating winds. Then, the entire 64-cycle begins again.