Astronomical housing costs, suffocating traffic congestion, and pollution take a heavy toll on our quality of life. Are these problems the inescapable consequences of modern life or the results of poor government policies? Proponents of "smart growth" seek to correct them by replacing suburban living with high-density, urban living and public transit. Others seeks to extend and expand current public and private systems. But how smart are these and other approaches? Would market-based alternatives be preferable to create sustainable communities? Urban economists Randal O'Toole and Daniel Klein discussed innovative "smarter growth" solutions for affordable housing, transportation, land use, and the quality of life in our communities.