How Long Has Human Civilization Existed On The Cosmic Calendar?
How Long Has Human Civilization Existed On The Cosmic Calendar? It wasn’t until approximately 11:48 PM on the cosmic calendar, or about 300,000 years ago in actual time, that anatomically modern humans, Homo sapiens, arose for the first time. The oldest Homo sapiens fossil now date back to 300,000-315,000 years ago, and were found in…