Roomba traces

November 6, 2013

Data Art / long-exposure, Roomba

We’ve seen what happens when you turn on a Roomba and track its vacuum path with long-exposure photography. The LED on top provides a point of focus, and the visual represents an odd blend of chaos and order. Above is what happens when you set different colored LEDs on seven Roombas and let them loose. Don’t miss all the other (clean) messes in the Flickr pool. [via Radiolab]

As of May 2016, there were 64,432 licensed firearms dealers and pawnbrokers, which got me wondering how that compares to other businesses.

Instead of looking at only the most common job in each state, I found the top five for a slightly wider view.

Your age versus how much you worry.

People tend to have more money saved up over time, but range and variation also grow, and often it’s not enough.