There are huge, almost geological time scales, that we have been human, and everywhere we look we find more evidence of earlier people, possibly even what we would call a civilization.
Also concrete doesn’t last that long. That is why it was a big deal when we figured out roman “self healing” concrete.
Radioactive materials is the big one. That might be the only evidence of a civilization if it was old enough.
We don’t have any evidence of organized civilizations older than around 5000bc I think, with gobekli tepe being an earlier potential civilization candidate.
That’s exactly what I’m saying. Humans have been genetically human for around 300,000 years.
This article mentions that plastic might take 1000 years to decompose in the ocean if we stop dumping it https://www.whoi.edu/ocean-learning-hub/ocean-facts/does-plastic-last-for-thousands-of-years-in-the-environment/
There are huge, almost geological time scales, that we have been human, and everywhere we look we find more evidence of earlier people, possibly even what we would call a civilization.
Also concrete doesn’t last that long. That is why it was a big deal when we figured out roman “self healing” concrete.
Radioactive materials is the big one. That might be the only evidence of a civilization if it was old enough.
We don’t have any evidence of organized civilizations older than around 5000bc I think, with gobekli tepe being an earlier potential civilization candidate.