One long term solution is to have more self sustaining communities. Local food, local business and electric vehicles run from local renewable energy (wind/solar

One long term solution is to have more self sustaining communities. Local food, local business and electric vehicles run from local renewable energy (wind/solar, still connected to the grid for efficiency). That's great and all but only weird eco people like me and the commenter above you would actually want to live there. There are massive tradeoffs. First there are all the usual tradeoffs of not living in a city but there is also less variety of food due to reduced imports. It would take longer to get specialist goods and services and travel time to say a medical specialist would be longer. The other issue is that it's hard to have a cohesive community if you have the wrong ratio of different existing cultures. If you have half one culture and half another you get a fractured community. You need either a massively mixed diverse community or a monoculture. I'd opt for the former with an emphasis on maintaining diversity instead of sliding into a grey goo world culture. But even then I don't know because I don't study those kind of social issues. The cultural problems, education and attitude problems are much harder to fix than the technical challenges. The draw of shiny stuff and tribalism is too much. That's where I don't think anyone has a solution. I just hope the next generation can figure that one out.