This is a longish piece by Ross Robertson that is a very interesting read. I like the idea of Bright Green vs. Dark Green.
Here is a small sample to whet your appetite.
That future will also be significantly more urban. “Manhattanites use fewer resources and less energy than anyone else in America,” writes Steffen—even people living in super-efficient green homes in the country. In fact, urban density is not only one of the best drivers of sustainable consumption but one of the best strategies for preserving wild nature as well. Rejecting the lavish inefficiency of the suburbs and learning how to integrate densely orchestrated urban communities with agricultural greenspace and healthy natural habitats will be essential to building a one-planet society. “The environmentalist aesthetic is to love villages and despise cities,” wrote Stewart Brand in MIT’s Technology Review:
My mind got changed on the subject a few years ago by an Indian acquaintance who told me that in Indian villages the women obeyed their husbands and family elders, pounded grain, and sang. But, the acquaintance explained, when Indian women immigrated to cities, they got jobs, started businesses, and demanded their children be educated. They became more independent, as they became less fundamentalist in their religious beliefs. Urbanization is the most massive and sudden shift of humanity in its history. Environmentalists will be rewarded if they welcome it and get out in front of it.
Everywhere that we see the rural-to-urban demographic swing around the world, Brand ex-plains—about two hundred thousand people a day leave the countryside for life in the city, and the planet just passed the fifty percent urban point this year—birthrates plummet and population growth stabilizes. That’s good news for developing nations being crushed under economic, environmental, and social pressures never before seen on Earth, because hand in hand with the challenges of urbanization comes an unprecedented explosion of opportunity.