'If an industrial civilization had existed on Earth many millions of years prior to our own era, what traces would it have left & would they be detectable today?' by @ClimateOfGavin & @AdamFrank4. Read this & be humbled! So little evidence would remain! Fascinating, Sunday fun. pic.twitter.com/BaiTkGZ3vR
— Michael Pyrcz (@GeostatsGuy) September 2, 2018
via Twitter https://twitter.com/GeostatsGuy
September 03, 2018 at 02:09AM
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