The concept that humanity has lived through multiple "cycles", separated by geophysical cataclysms, is not new - it recurs in many cultures, around the globe.

The Mayans believe we are in the fifth age of humanity, with each age ending (and beginning) in a great cataclysm - most recently, a flood.

Indian mythology tells of different "yugas", or human cycles, each demarcated by a flood.

The same concept is also found in the literature of Europe.

The most recent cataclysm likely happened several millenium ago - and there is likely another one right on the horizon. Earth's geomagnetic field has been undergoing an accelerating breakdown over the last few centuries. At this point, it's a question of "when", not "if".

If we don't put aside our differences, unite, and prepare, we will all perish.