Beautiful data visualizations and why we need open data

Today when I attended a talk at LWA 2010 I remembered a nice talk about beautiful data visualization by Hans Rosling, that I want to share with you (it’s worth the time):

When I searched for this talk I also came across the follwing two, the one above is a must, if you liked it, you might want to invest more time with these:

And last but not least another nice talk in this area, this time by David McCandless:

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