Spectrogram shows dialup modem handshake sounds

Presented mostly for my fond memories as a grade schooler, with a fresh 2400 bps modem in the 486, who recently discovered something called a BBS. Those were the good old days. My dad got me a 50-foot phone line to run from the computer to the phone jack in the back corner of another room.

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A Day in the Life of Americans

I wanted to see how daily patterns emerge at the individual level and how a person’s entire day plays out. So I simulated 1,000 of them.

Where People Run in Major Cities

There are many exercise apps that allow you to keep track of your running, riding, and other activities. Record speed, …

10 Best Data Visualization Projects of 2015

These are my picks for the best of 2015. As usual, they could easily appear in a different order on a different day, and there are projects not on the list that were also excellent.

Real Chart Rules to Follow

There are rules—usually for specific chart types meant to be read in a specific way—that you shouldn’t break. When they are, everyone loses. This is that small handful.