Interesting map showing that how green an electric car is, depends on where in the US you charge it. In areas that generate electricity by burning lots of coal, the carbon footprint is similar to a moden gas-powered compact car.

I'm not sharing this as a critique of electric cars, by the way. Instead I think the point is more about the power grid -- simply that burning coal puts carbon in the air and is a messier way to generate electricity? I don't think that's too controversial, although I can imagine reasonable people disagreeing about costs and benefits, short- vs. long-term, and unintended consequences of alternatives.
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