Could Earth have hosted an advanced civilization before humans? This intriguing question is at the heart of the Silurian Hypothesis, a theory that challenges our understanding of Earth’s history. By ...

The Silurian hypothesis asks whether it might be possible to find evidence of a pre-human industrial civilization in Earth’s geologic record—even one that might have existed millions of years ago. The ...

What if we aren't the first technological civilization on Earth? We’re almost certainly the first technological civilization on Earth. But what if we’re not? We are. Although how sure are we, really?

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 ...

(via PBS Space Time) We’re almost certainly the first technological civilization on Earth. But what if we’re not? We are. Although how sure are we, really? The Silurian hypothesis, which asks whether ...