Click on the image above. It's a beautiful illustration of how the United States spends money (on the left) and taxes (on the right), from the Congressional Budget Office. If we could tattoo these ...

The alignment chart, borrowed from the roleplaying game Dungeons & Dragons, is a common way of classifying different characters or situations along axes of good and evil, law and chaos. Many ...

Lately, I have been thinking a lot about the digital world that my middle school students live in. I grew up in a world where charts, graphs and maps were mainly used in academic publications.