Comments on: What if Humans Are NOT Earth’s First Civilization? | Silurian Hypothesis https://lifeboat.com/blog/2023/12/what-if-humans-are-not-earths-first-civilization-silurian-hypothesis Safeguarding Humanity Thu, 07 Dec 2023 22:26:12 +0000 hourly 1 https://wordpress.org/?v=6.6.2