Visualizing empires decline by Pedro M Cruz, who explains: "The data refers to the evolution of the top 4 maritime empires of the XIX and XX centuries by extent. The visual emphasis is on their decline." Here's more on the data and methodology. (via @visualthinkmap)
Boing Boing editor/partner and tech culture journalist Xeni Jardin hosts and produces Boing Boing's in-flight TV channel on Virgin America airlines (#10 on the dial), and writes about living with breast cancer. Diagnosed in 2011. @xeni on Twitter. email: email@example.com.