The Silurian Hypothesis suggests that millions of years ago there could have been a non-human civilization on Earth capable of transforming the world enough to cause climate changes comparable to or greater than those caused by mankind during the industrial age.
In a 2018 paper, Adam Frank, an astrophysicist at the University of Rochester, and Gavin Schmidt, director of the Goddard Institute for Space Studies, imagined an advanced civilization before humans and pondered whether it would “be possible to detect an industrial civilization in the geological record”.
The scientists base their findings on studying a phenomenon knhe Paleocene and the beginning of the Eocene, 56 million years ago.
During
that historical period, the average temperature of the Earth was 15
degrees higher than today. There was practically no ice on the entire
surface of the Earth, and the climate at the poles was almost tropical....<<<Read More>>>...