via visualizing.org >> http://www.visualizing.org/stories/visualizing-590-cities
Which cities’ populations are growing and which ones are shrinking? Are some global regions seeing more, and faster, urbanization than others? Can we compare trends across cities, and see how they change over time?
Answering these kinds of questions, one expects, would fill several pages in Wikipedia, or in graphical form, a hefty chunk of atlas.
Which is why we’re so impressed with this stack flow chart, by Barcelona-based Bestiario that manages to pack all of those details into a single digital square.
The visualization depicts the world’s 590 most populous cities, sorted column by column according to their population size between 1950 and 2010, with projections for 2015, 2020, 2025, and 2050. By rolling over the lines you can highlight individual cities’ growth trends.