Laura Freschi over at Aid Watch has just posted an interesting map that shows the amount of light that can be seen from outer space and which Henderson et al. (NBER, 2009) have used as a proxy for economic growth.
The map of the world is interesting in itself, but I find the 1992 and 2008 maps of the Korean peninsula to be more impressive, as they show how much economic growth took place in South Korea, but not in North Korea. Likewise, the map of Rwanda before, during, and after the genocide of 1994 is impressive.
(H/T: Eric Green, via Twitter)