Ralph Buehler is an assistant professor in urban affairs and planning at Virginia Tech. Most of his research uses international comparisons and falls into three areas: the influence of transport policy, land use, and socio-demographics on travel behavior; walking and cycling to improve public health; and regional planning for sustainable transport.

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How does one “green” an economy? For governments seeking a cleaner, more efficient, and ultimately more sustainable pathway to economic prosperity, this question entails both promise and great challenges. For one, the scale of transformation it requires is exceptionally daunting: in his 2011 State of the Union speech, for instance, President …

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