Happy post-Thanksgiving! To all Seattlites looking for a math-rich event for kids, we’ve finally got some Math Salons on the calendar, starting in January. Interested in joining us? Just rsvp, and we’ll see you there.

In other news, Randall Munroe recently created this incredibly dense poster of information, tracking money, how much of it there is, and what it gets spent on. It’s quite a feat, and worth looking at in detail. (Just click on the image to zoom in.)