I’m of the school that PowerPoint has served as the breeding ground for many misguided efforts to gussy up simple messages with unproductive or even worse, confusing and misleading graphics. This is an example of the opposite, a very good use of visualization of a large and complex data set by Hans Rosling, who has made a near art form of this sort of thing. Notice how the tradeoff between wealth and life expectancy flattens once a reasonable level of wealth has been achieved.
This did get linked to on some finance/econ blogs a few weeks ago, but I managed to miss it, and \suspect a few readers did as well, so consider this to be a turn of year catchup item. Hat tip reader Paul S. Enjoy!