The Silurian Hypothesis: Could An Advanced Civilization Have Lived On Earth Millions Of Years Before Humans? - IFLScience

If a technologically advanced species existed on Earth before us, they may have left a trace.

In Doctor Who, an alien species called the Silurians exists technologically-advanced humanoid reptiles who lived long before humans, going into hiding and being basically undiscovered again until eve… [+3896 chars]

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