Cheryl Kent is a journalist and editor who has been writing about architecture and cities for 35 years. The most recent of Kent's thirteen books-Millennium Park Chicago and Santiago Calatrava: Milwaukee Art Museum Quadracci Pavilion - tell of heroic efforts to realise monumental urban projects. In 2013, she was visiting architecture critic at the Chicago Tribune. Her work has also appeared in the New York Times Sunday Arts & Leisure, Architectural Record, and Metropolis. She has acted as a consultant to historic preservation organisations and was awarded a grant from the National Endowment for the Arts for her research on government architecture. Alex Marshall is a longtime writer about cities, architecture, economics, development, infrastructure, and urban affairs. He is the author of The Surprising Design of Market Economies; Beneath the Metropolis: The Secret Lives of Cities; and How Cities Work: Suburbs, Sprawl, and the Roads Not Taken. Marshall is a regular columnist for Governing Magazine, and has been published in the New York Times, Bloomberg View, Citylab, among others. He holds a master's degree in journalism from Columbia University. In 2000, Marshall was a Loeb Fellow at Harvard University's Graduate School of Design. Helmut Jahn, FAIA, has built work in the United States, Europe, Africa, and Asia. He is committed to design excellence, improving cities, and addressing environmental issues through architecture. Jahn received the Lifetime Achievement Award from the AIA in 2012. He has taught in the architecture schools at Yale and Harvard universities. Born in Germany, Jahn attended the Technische Hochschule in Munich and moved to the United States for graduate studies at Illinois Institute of Technology. In 1967 he joined C.F. Murphy (now JAHN) where he has remained.