http://show.mappingworlds.com/
This site lets you visualize world stats by showing the country's relative size in relation to the value of the statistic. I see a lot of cool things like this on the internet, and it always amazes me that I can stumble across, for "free"(obviously a relative term), what is obviously a representation of a huge amount of work. I don't know exactly what "free" means in this context, but I do know that probably millions of people will view and play around with this mapping visualizer, and may freely build their own ideas based on this information. I have high hopes that things like this will help spark the light bulb ideas to the solutions of a sustainable economy in this generation.

This screen shot is a map of solar energy use. The description talks about all aspects of passive and active solar energy use; active solar is like solar panels, and passive solar techniques are like trapping sun heat in thick stone walls to keep your house warm in the winter. Now how they factored all that data for this map is beyond me, but there are other maps on there of more straight forward stats like how many cars are in each country.