Are We The First Civilization? The Silurian Hypothesis
Update: 2025-08-31
Description
The episode explores the Silurian Hypothesis, which questions whether humans are the first advanced civilization on Earth. It explains that evidence of past civilizations, like buildings or even nuclear fallout, would likely disappear over millions of years due to geological processes such as plate tectonics and erosion, making direct detection incredibly difficult. Instead, the hypothesis suggests looking for indirect evidence in sedimentary rock layers, such as temporary spikes in carbon isotopes, metals, and global temperature, which could indicate a prior industrial civilization.
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