Hans Rosling, a professor of global health at Sweden's Karolinska Institute, focuses on 'dispelling common myths about the so-called developing world' (as his TED bio well notes). And he has established a reputation for presenting data in extremely imaginative ways. Just watch the video above, an outtake from the BBC show "The Joy of Stats"). In four minutes, Rosling visually traces the health of 200 countries over 200 years, using 120,000 data points, and we end up with a little reason for optimism. Great stuff... Thanks to @Sheerly for flagging this.