Russ Roberts saw this and wrote, "This is so cool." You really need to take 20 minutes of your day and watch this Google video of Hans Rosling giving a presentation on economic development at the recent TED conference.
Back in January, I linked to Rosling's site, http://www.gapminder.org. I'm about to start lecturing on growth in my intermediate macro course, and I intend to use the wonderful interactive tools on the site.
UPDATE: The video is also available from the TED blog along with other videos from the conference.
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