In a TED Talk released this week, medical statistician Hans Rosling presents a new way to visualize the global AIDS epidemic. By displaying dollars spent per person, graphed as a function of the percentage of the population infected with HIV (by continent), we can see both how AIDS has spread, and how the money spent per patient has affected that spread. Starting in 1983, Rosling's visualization is an animated graph that dramatically demonstrates how the epidemic works, and even allows interaction --... READ ON