underground economy

tags: TEDTalks, environment, cities, poverty, crime, underground economy, Stewart Brand, streaming video The man who helped usher in the environmental movement in the 1960s and '70s has been rethinking his positions on cities, nuclear power, genetic modification and geo-engineering. This talk at the US State Department is a foretaste of his major new book, sure to provoke widespread debate. You've GOT to watch the video of the train going through the poor part of town in Bankok -- it's amazing! [16:42] TEDTalks is a daily video podcast of the best talks and performances from the TED…