Why in some sections of Chicago does life expectancy easily exceed that of Japan, the longest lived country on earth, while just a few neighborhoods over, life expectancy matches that of Equatorial Guinea, one of the shortest lived societies on earth? Steven Wolf, a professor at Virginia Commonwealth University and an expert in the social determinants of health, tells us how our cities should be reengineered for longer, healthier and more equitable lives. And he also tells us why highways matter.