We are not nomadic at all! We are anchored to a fixed location. New York city can't just pack up and move to Albany because the Hudson is overflowing its delta. Transportation has little to do with it but infastructure has us tied down. What we do as individuals means nothing if the masses can not follow suit.
A prime example is New Orleans, a city which from common sense should never have existed, is being rebuilt on the floodplain. If the ocean rises, and someday it will, Katrina will be nothing compared to what will happen but mankind is too stupid or greedy to see that. Get those tourists back as soon as possible and all else be damned! Please do not feel that I am not sympathetic to the poor souls that lost everything including many lives there. It is just that we don't learn from our mistakes.
If Koyota was to work it would have required full participation of the worlds nations. It never received that so was doomed to failure from the start. Things like giving China an exemption was beyond stupid. They are powered by coal and slave labour and would be allowed to continue to pollute the atmosphere so Wal-Mart and sneaker companies could make fortunes.
If we are to make big changes in Earths ecology we must start where we can effect the greatest immediate improvement and go on from there.
How about a worldwide ban on bottom dragging for fish to begin.