Anne Whiston Spirn is professor and chairman, Department of Landscape Architecture and Regional Planning, University of Pennsylvania.

• * Prologue: The Granite Garden City and Nature * City and Nature Air * Dirt and Discomfort * Improving Air Quality, Enhancing Comfort, and Conserving Energy Earth * Shifting Ground and Squandered Resources * Finding Firm Ground and Exploiting Resources Water * Floods, Droughts, and Poisoned Water * Controlling and Restoring the Waters Life * Urban Plants: Struggle for Survival * Nurturing the Urban Biome * Pets and Pests * Designing Wildlife Habitats The Urban Ecosystem * The City as an Infernal Machine * Designing the Urban Ecosystem * Epilogue: Visions of the Future

Anne Whiston Spirn is professor and chairman, Department of Landscape Architecture and Regional Planning, University of Pennsylvania.

• * Prologue: The Granite Garden City and Nature * City and Nature Air * Dirt and Discomfort * Improving Air Quality, Enhancing Comfort, and Conserving Energy Earth * Shifting Ground and Squandered Resources * Finding Firm Ground and Exploiting Resources Water * Floods, Droughts, and Poisoned Water * Controlling and Restoring the Waters Life * Urban Plants: Struggle for Survival * Nurturing the Urban Biome * Pets and Pests * Designing Wildlife Habitats The Urban Ecosystem * The City as an Infernal Machine * Designing the Urban Ecosystem * Epilogue: Visions of the Future