I am of the belief that the future holds a return to the land.... where even city dwellers will tend to move fifty to a hundred miles from big cities so that they can have their own garden... or small farm.   A second part to the larger formula that I believe will actually work will be deliberately turning deserts green which we now have the technology to do..... so what remains is to find the "political will" to make this happen.     Carbon Farming: Harnessing The Power