Blogging on Air Quality and Transportation

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If you're interested in non-political discussion of air quality and transportation issues, look into Alan Kandel's blog, Air Quality Mattters, on the Science Blog web site. His musings from last November on the effects of public transit development in mitigating air pollution are particularly interesting. His most recent post, a brief discussion of the pros and cons of diesel-electric versus pure electric train operations, provides some background on the history of rail in the U.S. followed by discussion of motive power choices for now and the future.