What If We Aren’t the First Advanced Civilization on Earth? Exploring the Silurian Hypothesis and Technosignatures
What If We Aren’t the First Advanced Civilization on Earth? Exploring the Silurian Hypothesis and Technosignatures Earth scientists at the turn of the century, Gavin Schmidt among them, were enthralled by a 56-million-year-old segment of geologic history known as the Paleocene-Eocene…
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