TY - JOUR AU - Glaeser,Edward L. AU - Kahn,Matthew E. TI - The Greenness of Cities: Carbon Dioxide Emissions and Urban Development JF - National Bureau of Economic Research Working Paper Series VL - No. 14238 PY - 2008 Y2 - August 2008 UR - http://www.nber.org/papers/w14238 L1 - http://www.nber.org/papers/w14238.pdf N1 - Author contact info: Edward L. Glaeser Department of Economics 315A Littauer Center Harvard University Cambridge, MA 02138 Tel: 617/495-0575 Fax: 617/495-7730 E-Mail: eglaeser@harvard.edu Matthew E. Kahn UCLA Institute of the Environment Department of Economics Department of Public Policy Anderson School of Management UCLA Law School, Box 951496 Los Angeles, CA 90095-1496 Tel: 310/794-4904 Fax: 310/825-9663 E-Mail: mkahn@ioe.ucla.edu AB - Carbon dioxide emissions may create significant social harm because of global warming, yet American urban development tends to be in low density areas with very hot summers. In this paper, we attempt to quantify the carbon dioxide emissions associated with new construction in different locations across the country. We look at emissions from driving, public transit, home heating, and household electricity usage. We find that the lowest emissions areas are generally in California and that the highest emissions areas are in Texas and Oklahoma. There is a strong negative association between emissions and land use regulations. By restricting new development, the cleanest areas of the country would seem to be pushing new development towards places with higher emissions. Cities generally have significantly lower emissions than suburban areas, and the city-suburb gap is particularly large in older areas, like New York. ER -