Could an Industrial Civilization Have Predated Humans on Earth?

https://nautil.us/could-an-industrial-civilization-have-predated-humans-on-earth-352964/

«In 2018, climatologist Gavin Schmidt and astrophysicist Adam Frank published an intriguing paper in the International Journal of Astrobiology called, “The Silurian hypothesis: Would it be possible to detect an industrial civilization in the geological record?” The title is derived from a Doctor Who episode featuring a reptilian race known as the Silurians who gained intelligence before humans. The purpose of the Silurian hypothesis isn’t to assert that another civilization came before us. Rather, it’s a thought experiment to get us thinking about how we would know if a pre-human civilization once existed, a point that might be too subtle for some netizens in our age of Ancient Aliens memes.»

«Schmidt and Frank acknowledge that paleontologists haven’t uncovered fossilized evidence of pre-human civilizations—but that’s the point. If a civilization thrived millions of years prior to us, its artifacts could have been destroyed. Geological processes such as tectonic plate subduction and glaciation could easily erase evidence of ancient urbanization.»