Hans Rosling on AIDS

Hans Rosling unveils new data visuals that untangle the complex risk factors of one of the world's deadliest (and most misunderstood) diseases: HIV. He argues that preventing transmissions -- not drug treatments -- is the key to ending the epidemic.

If you think this is a pretty cool presentation (which it is) then check out his most famous presentation 'the best stats you've ever seen' where he debunks a number of myths about 'developing' countries.