Wonderz

Thanks guys, really interesting answers. Strange, thank you I need to read all of this, super exciting!

Hello Everyone! I'm new to the forum and I'd like to pose my first question. Something I have not yet found a good answer to. I'm hoping for some input from geology/chemistry or any other members with relevant knowledge. OK here goes: How long, at least in theory, would it take for the planet to be completely "scrubbed" of all traces of human civilization/activity. In other words, is it possible through the elapse of specific timespan, to never be able to tell that human beings once had a civilization here on earth? Thanks in advance!