Compact Cities Won’t Save the Planet

Several recent reports from the smart-growth crowd have argued that U.S. cities must be rebuilt to higher densities in order to reduce greenhouse gas emissions. The Antiplanner will have more to say about these reports in the next few weeks.

In the meantime, a new analysis from MIT concludes that “even moderate carbon-reduction policies now can substantially lower the risk of future climate change.” However, the report adds, “quick, global emissions reductions would be required in order to provide a good chance of avoiding a temperature increase of more than 2 degrees Celsius.”

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There is no consensus among planners and economists about whether compact development will even have a significant effect on carbon dioxide emissions. Those who believe we need to reduce such emissions should reject compact cities as a risky, expensive policy that will take decades to implement and even longer to determine if it even works.