Was There a Civilization On Earth Before Humans?
Sección: Ciencia Machadines
Creado: 01-05-19 (Actualizado: 11-05-19)
A look at the available evidence
https://www.theatlantic.com/science/archive/2018/04/are-we-earths-only-civilization/557180/
Creado: 01-05-19 (Actualizado: 11-05-19)
A look at the available evidence
https://www.theatlantic.com/science/archive/2018/04/are-we-earths-only-civilization/557180/