Nice piece Lannie. We have certainly outgrown our host and I don't think will ever make it off our beloved planet. Perhaps we would have been better off leaving the coal in the ground.

I was reading about Biodome 2, it's quite interesting to see just how hard it is to create and sustain the conditions we need to florish. If we can't do it here on Earth with all our resources, there's very little chance we're doing it in space or on Mars.