Ever find yourself stuck creating an endless number of bar graphs for your management PowerPoint presentations? Graphs were meant to catch your eye and deliver relevant information quickly (and perhaps prevent the audience from dozing off).
Here are some inspirational graphs by Karl Hartig that have been taken to an art form and published in the Wall Street Journal.
Then there are cartograms where the size of the country changes according to a variable. For example, compare all countries in the world to their the GDP or number of people with AIDS.