In less than sixty seconds, using nothing but a couple handfuls of stones and some pithy exposition, statistician Hans Rosling delivers an impromptu talk about how population growth and economic stratification will change in the coming decades.
TED speakers are known for their brief but informative presentations, and few of them are as gifted in this regard as Rosling; but this takes the standard of clear, concise communication to an entirely new level.
And if you don't know who Hans Rosling is, watch this. You're in for a real treat. [Spotted on Infosthetics]