Once a molten blend of steelworks and smog, Pittsburgh is newly scrubbed and promising a glimpse of a clean, green post-industrial future as the leaders of the world’s 20 most powerful economies converge here Thursday for the G20 Summit.
Once a molten blend of steelworks and smog, Pittsburgh is newly scrubbed and promising a glimpse of a clean, green post-industrial future as the leaders of the world’s 20 most powerful economies converge here Thursday for the G20 Summit.