Silurian Hypothesis: What If Humans Aren’t the First Civilization on Earth?

Scientists are starting to take Dr. Who a little more seriously.

Earth is completely overrun with humans — there are billions of us living and dying on this planet, leaving signs of our existence in the soil, atmosphere, and even in space. Are we the first, though?

Source: Silurian Hypothesis: What If Humans Aren’t the First Civilization on Earth? – ExtremeTech

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