Some time ago, Walter Benjamin and Asja Lacis used the term "porosity" with reference to Naples’ urban characteristics – spaces merging into each other and providing the backdrop for the unforeseen – improvisation as a way of life. Today, the term "porosity" in this context is increasingly used conceptually. Well-known authors from the worlds of architecture, town planning, and landscape design embark on a search for new concepts for a life-enhancing, user-friendly city – with reference to this enigmatic term. The term refers to the overlaying and interweaving of spaces and structures, to urban textures and their architectural properties and qualities – to cities with radically mixed urban functions.

A timely and original cultural history of Rio de Janeiro.

Welcome to Porous City! Welcome to a porous society! Welcome to cities that want to be open and porous! Our cities consist of buildings that are introverted and not mixed with urban life. They are closed. How to open them? How can we introduce pockets for encounters, for streams of circulation, for green areas, for tunnels of cooling ... What logics can be imagined in our towers to allow for this openness? Using stepped floors? Creating grottos? Splitting towers? Twisting blocks? Every hypothesis leads to a series of interventions. How far can we go before the tower collapses, before it is unaffordable? Together, these series form an army of towers that contributes to a more porous city. Why wait?

Historic Urban Landscape is a new approach to urban heritage management, promoted by UNESCO, and currently one of the most debated issues in the international preservation community. However, few conservation practitioners have a clear understanding of what it entails, and more importantly, what it can achieve. Examples drawn from urban heritage sites worldwide – from Timbuktu to Liverpool Richly illustrated with colour photographs Addresses key issues and best practice for urban conservation

With the railroad's arrival in the late nineteenth century, immigrants of all colors rushed to the U.S.-Mexico borderlands, transforming the region into a booming international hub of economic and human activity. Following the stream of Mexican, Chinese, and African American migration, Julian Lim presents a fresh study of the multiracial intersections of the borderlands, where diverse peoples crossed multiple boundaries in search of new economic opportunities and social relations. However, as these migrants came together in ways that blurred and confounded elite expectations of racial order, both the United States and Mexico resorted to increasingly exclusionary immigration policies in order to make the multiracial populations of the borderlands less visible within the body politic, and to remove them from the boundaries of national identity altogether. Using a variety of English- and Spanish-language primary sources from both sides of the border, Lim reveals how a borderlands region that has traditionally been defined by Mexican-Anglo relations was in fact shaped by a diverse population that came together dynamically through work and play, in the streets and in homes, through war and marriage, and in the very act of crossing the border.

A deeply reported personal investigation by a Miami journalist examines the present and future effects of climate change in the Magic City -- a watery harbinger for coastal cities worldwide. Miami, Florida, is likely to be entirely underwater by the end of this century. Residents are already starting to see the effects of sea level rise today. From sunny day flooding caused by higher tides to a sewer system on the brink of total collapse, the city undeniably lives in a climate changed world. In Disposable City, Miami resident Mario Alejandro Ariza shows us not only what climate change looks like on the ground today, but also what Miami will look like 100 years from now, and how that future has been shaped by the city's racist past and present. As politicians continue to kick the can down the road and Miami becomes increasingly unlivable, real estate vultures and wealthy residents will be able to get out or move to higher ground, but the most vulnerable communities, disproportionately composed of people of color, will face flood damage, rising housing costs, dangerously higher temperatures, and stronger hurricanes that they can't afford to escape. Miami may be on the front lines of climate change, but the battle it's fighting today is coming for the rest of the U.S. -- and the rest of the world -- far sooner than we could have imagined even a decade ago. Disposable City is a thoughtful portrait of both a vibrant city with a unique culture and the social, economic, and psychic costs of climate change that call us to act before it's too late.

From tenements to alleyways to latrines, twentieth-century American cities created spaces where pests flourished and people struggled for healthy living conditions. In Pests in the City, Dawn Day Biehler argues that the urban ecologies that supported pests were shaped not only by the physical features of cities but also by social inequalities, housing policies, and ideas about domestic space. Community activists and social reformers strived to control pests in cities such as Washington, DC, Chicago, Baltimore, New York, and Milwaukee, but such efforts fell short when authorities blamed families and neighborhood culture for infestations rather than attacking racial segregation or urban disinvestment. Pest-control campaigns tended to target public or private spaces, but pests and pesticides moved readily across the porous boundaries between homes and neighborhoods. This story of flies, bedbugs, cockroaches, and rats reveals that such creatures thrived on lax code enforcement and the marginalization of the poor, immigrants, and people of color. As Biehler shows, urban pests have remained a persistent problem at the intersection of public health, politics, and environmental justice, even amid promises of modernity and sustainability in American cities. Watch the trailer: http://www.youtube.com/watch?v=GG9PFxLY7K4&feature=c4-overview&list=UUge4MONgLFncQ1w1C_BnHcw

Named by Newsweek magazine to its list of "Fifty Books for Our Time." For sixteen years William Whyte walked the streets of New York and other major cities. With a group of young observers, camera and notebook in hand, he conducted pioneering studies of street life, pedestrian behavior, and city dynamics. City: Rediscovering the Center is the result of that research, a humane, often amusing view of what is staggeringly obvious about the urban environment but seemingly invisible to those responsible for planning it. Whyte uses time-lapse photography to chart the anatomy of metropolitan congestion. Why is traffic so badly distributed on city streets? Why do New Yorkers walk so fast—and jaywalk so incorrigibly? Why aren't there more collisions on the busiest walkways? Why do people who stop to talk gravitate to the center of the pedestrian traffic stream? Why do places designed primarily for security actually worsen it? Why are public restrooms disappearing? "The city is full of vexations," Whyte avers: "Steps too steep; doors too tough to open; ledges you cannot sit on. . . . It is difficult to design an urban space so maladroitly that people will not use it, but there are many such spaces." Yet Whyte finds encouragement in the widespread rediscovery of the city center. The future is not in the suburbs, he believes, but in that center. Like a Greek agora, the city must reassert its most ancient function as a place where people come together face-to-face.