And, if we’re going back this far, we’re not talking about human civilizations anymore. Homo sapiens didn’t make their appearance on the planet until just 300,000 years or so ago .

It took humans 10,000 years to go from hunter-gatherers to world domination. Considering the vastness of time that humans and ...

"Humans are the only example we know of, and our industrial civilization has lasted (so far) roughly 300 years (since, for example, the beginning of mass production methods).

In Doctor Who, an alien species called the Silurians exists – technologically-advanced humanoid reptiles who lived long ...

This raises the possibility that industrial civilizations might have been around long before human ones ever existed — not just around other stars, but even on Earth itself. [ Greetings ...

Inspired by a Doctor Who episode, the Silurian hypothesis asks if there are traces of an industrial civilization before humans on Earth. Inspired by a Doctor Who episode, ... and it dates back a mere ...

“Based on that data a civilization like humanity would be more likely to invade than a Type-1 civilization, but they would not have the means to travel to an extraterrestrial planet.” ...

Was There a Civilization On Earth Before Humans? The Atlantic. Updated Fri, April 13, ... And, if we’re going back this far, we’re not talking about human civilizations anymore.

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 ...

It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA’s Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day ...

This raises the possibility that industrial civilizations might have been around long before human ones ever existed — not just around other stars, but even on Earth itself. [ Greetings ...