Baltimore is pockmarked by thousands of abandoned homes and empty lots. What effect do vacant properties have on health? What can the city do to transform blight into inviting outdoor spaces? Former state secretary of health, Joshua Sharfstein, points to research that measures how blight raises stress levels. And Stephanie Smith, Assistant Director for Equity, Engagement, and Communications for the city Planning Department, describes a plan to turn vacant properties into parks, playgrounds, and trails.