You're looking at a bar chart race showing which cities had the largest populations at any time over history. We're going to start the race at 1500 A.D. In the early 1500s most people lived in the ...

The classic horizontal bar chart is something we’re all familiar with. For many of us, it was the first ‘chart’ we learnt in school, usually alongside Venn diagrams and line graphs. That’s because bar ...