[postingawayonhn]

The earth hasn't always existed in its current state, or for that matter existed at all.

Once day the earth will almost certainly cease to exist and intelligence will have to find a new home of some kind. We have probably got a couple of billion years though if we are careful and I have no idea what intelligence will evolve to over that timeframe.

[cdelsolar]

Just a few hundred million years. The sun will be too luminous pretty soon.

[randomopining]

Ok so lets figure out our problems first and then move on. If we go too soon we'll bring all of our standard problems.