Can graphs change lives? Professor Hans Rosling has been credited by Microsoft's Bill Gates as one of his inspirations to give so much to charity - the reason? Beautiful graphs. Professor Rosling makes animated graphs of world data for his project Gapminder.org. He says people still hold powerful misconceptions about the world, not because of a lack of data, but because the tools for understanding the data have not been created and the data remains hidden in the databases.
This is an extended version of the broadcast interview.
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