If another advanced civilization lived on Earth before us, would we know?
climate changeadvanced civilizationfossil evidenceSilurian hypothesisspeculationAdam FrankGavin SchmidtKatharine HayhoeastrobiologysustainabilityEarth's pastfuture.
Author: samizdis
Date: 7/25/2026
Article Summary:
Two scientists propose a thought experiment to consider the possibility of a past advanced civilization on Earth that may have triggered climate shifts, similar to what humans are doing now.