civilization pre dating

Generally accepted as being the oldest civilization ever to have existed, Sumeria is thought to have its origins around years ago, or BC. Astrophysicists Adam Frank and Gavin Schmidt proposed the "Silurian Hypothesis" in a paper, exploring the possibility of detecting an advanced civilization before humans in the geological record. It is when we found ourselves in contact with fellow humans, we realised, not all are in tune with peace and harmony? However, it dwarfs them both in its size, spanning over an estimated 1. April 21, I read the paper. Sumerian civilization coalesced in the subsequent Uruk period to BC.

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