PETER CALTHORPE is principal of Calthorpe Associates, an architecture, urban design, and regional planning firm based in Berkeley. Calthorpe Associates is internationally recognized for its innovative leadership in shaping new forms of growth and development that reestablish a sense of place, scale, history, and environmental balance within the built environment. He is the author of numerous books, including The Next American Metropolis and The Regional City: Planning for the End of Sprawl; his latest book, Urbanism in the Age of Climate Change, was published by Island Press in 2013.