YOU’RE AN H1N1 influenza virus—swine flu—just hanging out in Hanoi, Vietnam. But now it’s time to spread and infect. How should you go about your global epidemic? To navigate, you can use this map, which shows the paths that would take you from Hanoi to every corner of the globe. Want to go to Ft. Lauderdale? Just transfer in New York. Or, if you’d rather go to Baton Rouge, first go through Singapore and then New Orleans.