Fireworks Chart Shows the Explosive Power of Data Visualization

This chart at Stat News tells the story of July 4th injuries so much better than was possible with the tools we had even a few years ago. The subject, fireworks, are used to represent each data point, plus the chart is interactive. Hovering over a data point gives specifics about one of the injuries underlying the data.  The full article is worth a look for the other visualizations, as are other visualizations by Natalia Bronshtein‏ @ininteraction.