From Discovery... Topic interested me as it has been some time since any rethinking of the Ancient Past stagnated after the Kahoutek Comet hit Earth and resulting global cooling killed off the dinosaurs. The Paleozoic Age is history's most diverse zoological period other than modern times. Learning more of this ancient past helps us understand the cycle of life and death that wipes out upwards of 92% of Earth species when the cycle occurs. The relative time-frame is every 50 million years o0r so.. The last one? The destruction caused by Kahoutek was roughly 65 million years ago.

To Say the Least, We are Overdue...