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 ...

Researchers have recently uncovered a series of artifacts that suggest the existence of pre-human engineers, challenging our understanding of early human evolution. These findings, dispersed globally, ...

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 ...