The American Dream of a single-family home on its own expanse of yard still captures the imagination. But with a growing population —100 million more people expected in the United States by 2050—rising energy and transportation costs, disappearing farmland and open space, and the clear need for greater energy efficiency and a reduction in global warming emissions, the future built environment must include more density. Landscape architect and land planner Julie Campoli and aerial photographer Alex S. MacLean have joined forces to create a full-color, richly illustrated book to help planners, designers, public officials, and citizens better understand, and better communicate to others, the concept of density as it applies to the residential environment.