This is fascinating, excellent weekend reading:
http://www.washingtonpost.com/blogs/worldviews/wp/2013/08/12/40-maps-that-explain-the-world/
Articles, posts and podcasts about sustainable supply chains, mostly
http://www.washingtonpost.com/blogs/worldviews/wp/2013/08/12/40-maps-that-explain-the-world/