We are living in a new urban age and its most tangible expression is the "supertall": megastructures that are dramatically bigger, higher, and more ambitious than any in history. In Supertall, TED Resident Stefan Al-himself an experienced architect who has worked on some of the largest buildings in the world-reveals the advancements in engineering, design, and data science that have led to this worldwide boom. Using examples from the past (the Empire State Building, St. Paul's Cathedral, the Eiffel Tower) and present (Dubai's Burj Khalifa, London's Shard, Shanghai Tower), he describes how the most remarkable skyscrapers have been designed and built. He explores the ingenious technological innovations-in cement, wind resistance, elevator design, and air-conditioning-that make the latest megastructures a reality. And he examines the risks of wealth inequality, carbon emissions, and contagion they yield while arguing for a more sustainable, resilient, and equitable built environment for everyone.

We are living in a new urban age, and its most tangible expression is the “supertall”: megastructures that are dramatically bigger, higher and more ambitious than any in history. Cities around the world are racing to build the first mile-high building, stretching the limits of engineering and design as never before. In this fascinating work of urban history and design, TED resident Stefan Al—himself an experienced architect—explores the factors that have led to this worldwide boom. He reveals the marvellous and under-appreciated feats of engineering that make today’s supertalls a reality, from double-decker elevators that silently move up to 50 miles per hour to the sophisticated blend of polymers and steel fibres that enables concrete to withstand 8,000 tons of pressure per square meter. Taking readers behind the scenes of the building and design of remarkable megastructures, both from the past (the Empire State Building, St. Paul’s Cathedral, the Eiffel Tower) and the present (Dubai’s Burj Khalifa, London’s Shard, Shanghai Tower), Al demonstrates the impact of these innovations. Yet while the supertall is undoubtedly a testament to great technological victories, it can come at an environmental and social cost. Focusing on four global cities—London, New York, Hong Kong and Singapore—Al examines the risks of wealth inequality, carbon emissions and contagion that stem from supertalls. And he uncovers the latest innovations in sustainable building, from skyscrapers made of wood to tree-covered buildings, that promise to yield a better urban future. Featuring more than thirty architectural drawings, Supertall is both a fascinating exploration of our greatest accomplishments and a powerful argument for a more equitable way forward.

Cities across the globe have been designed with a primary goal of moving people around quickly--and the costs are becoming ever more apparent. The consequences are measured in smoggy air basins, sprawling suburbs, unsafe pedestrian environments, and despite hundreds of billions of dollars in investments, a failure to stem traffic congestion. Every year our current transportation paradigm generates more than 1.25 million fatalities directly through traffic collisions. Worldwide, 3.2 million people died prematurely in 2010 because of air pollution, four times as many as a decade earlier. Instead of planning primarily for mobility, our cities should focus on the safety, health, and access of the people in them. Beyond Mobility is about prioritizing the needs and aspirations of people and the creation of great places. This is as important, if not more important, than expediting movement. A stronger focus on accessibility and place creates better communities, environments, and economies. Rethinking how projects are planned and designed in cities and suburbs needs to occur at multiple geographic scales, from micro-designs (such as parklets), corridors (such as road-diets), and city-regions (such as an urban growth boundary). It can involve both software (a shift in policy) and hardware (a physical transformation). Moving beyond mobility must also be socially inclusive, a significant challenge in light of the price increases that typically result from creating higher quality urban spaces. There are many examples of communities across the globe working to create a seamless fit between transit and surrounding land uses, retrofit car-oriented suburbs, reclaim surplus or dangerous roadways for other activities, and revitalize neglected urban spaces like abandoned railways in urban centers. The authors draw on experiences and data from a range of cities and countries around the globe in making the case for moving beyond mobility. Throughout the book, they provide an optimistic outlook about the potential to transform places for the better. Beyond Mobility celebrates the growing demand for a shift in global thinking around place and mobility in creating better communities, environments, and economies.

In 2012, Hurricane Sandy floods devastated coastal areas in New York and New Jersey. In 2017, Harvey flooded Houston. Today in Miami, even on sunny days, king tides bring fish swimming through the streets in low-lying areas. These types of events are typically called natural disasters. But overwhelming scientific consensus says they are actually the result of human-induced climate change and irresponsible construction inside floodplains. As cities build more flood-management infrastructure to adapt to the effects of a changing climate, they must go beyond short-term flood protection and consider the long-term effects on the community, its environment, economy, and relationship with the water. Adapting Cities to Sea Level Rise, by infrastructure expert Stefan Al, introduces design responses to sea-level rise, drawing from examples around the globe. Going against standard engineering solutions, Al argues for approaches that are integrated with the public realm, nature-based, and sensitive to local conditions and the community. He features design responses to building resilience that creates new civic assets for cities. For the first time, the possible infrastructure solutions are brought together in a clear and easy-to-read format. The first part of the book looks at the challenges for cities that have historically faced sea-level rise and flooding issues, and their response in resiliency through urban design. He presents diverse case studies from New Orleans to Ho Chi Minh to Rotterdam, and draws best practices and urban design typologies for the second part of the book. Part two is a graphic catalogue of best-practices or resilience strategies. These strategies are organized into four categories: hard protect, soft protect, store, and retreat. The benefits and challenges of each strategy are outlined and highlighted by a case study showing where that strategy has been applied. Any professional or policymaker in coastal areas seeking to protect their communities from the effects of climate change should start with this book. With the right solutions, Al shows, sea-level rise can become an opportunity to improve our urban areas and landscapes, rather than a threat to our communities.