This interactive map from CarbonBrief shows how America generates electricity. Each circle represents a power source, color represents type, and size represents output.
See also a more edited version from The Washington Post a couple of years back.
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These are my picks for the best of 2015. As usual, they could easily appear in a different order on a different day, and there are projects not on the list that were also excellent.
I call myself a statistician, because, well, I’m a statistics graduate student. However, the most important things I’ve learned are less formal, but have proven extremely useful when working/playing with data.
The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.
The ever so popular Walmart growth map gets an update, and yes, it still looks like a wildfire. Sam’s Club follows soon after, although not nearly as vigorously.