Like the famous Russian Matryoshka doll, opening a package often feels like uncovering endless layers. Inside a cardboard box, there might be molded Styrofoam, then several plastic air pillows, and finally, individual plastic wrapping around each piece. Even a small product can leave behind a trail of plastic waste far larger than its size. Now imagine this logic applied to a construction site where every component, every delivery of materials, often arrives wrapped in multiple layers of protection. What already seems excessive in retail becomes monumental when repeated daily on large construction projects.
What is architecture? For some, its traditional role is to bring together imagination, technical knowledge, and problem-solving, allowing architects to design and construct while balancing ideas with the means to realize them. From the stone and wood of early buildings to the steel and concrete of the 20th century, each era demanded not only an understanding of form but also of the properties and potential of the materials in use. This grasp of materials has always been a core part of the creative process, though its scope was limited by the know-how and technologies available.
Over time, that balance has begun to shift. Architects have moved from merely using materials to actively designing them, applying scientific principles and experimenting with biological, chemical, and computational processes. This evolution has expanded the possibilities of architecture, intersecting nature, technology, and art, while pushing the role of the architect into a more experimental, science-driven dimension, where the manipulation and creation of materials becomes central to the creative act rather than merely a means to achieve forms or structures.
All materials come from somewhere, embedded in a chain of extraction, supply, production, and disposal that, depending on its scale, leaves more or less significant marks on the environment. In architecture, we usually approach this trajectory through the lens of materials' circularity, considering how they can re-enter production cycles rather than become waste. Yet, broadening our view to unexpected places reveals parallel systems where by-products from one industry become resources for another. This approach has found fertile ground in organic waste transformed into biomaterials, with one of the most recent examples being the work of Fahrenheit 180º. Through their installation, "From the Tagus to the Tile", they repurpose oyster shells initially discarded by food systems to create a reinterpretation of Lisbon's iconic tiles.
Lydia Kallipoliti is a recognized architect, author, and educator whose pioneering research has transformed the way architecture engages with the pressing challenges of sustainability, technology, and environmental politics. As an Associate Professor at Columbia University's Graduate School of Architecture, Planning, and Preservation (GSAPP), Kallipoliti's approach to architectural education encourages students to confront critical issues such as waste, reuse, and closed-loop systems. Her pedagogical philosophy empowers students to see design not only as an aesthetic or functional pursuit but as a powerful tool for addressing global ecological crises, urging them to think systemically and creatively about the future of the built environment.
In addition to her role in academia, Kallipoliti has authored influential works such as The Architecture of Closed Worlds and Histories of Ecological Design: an Unfinished Cyclopedia, which delve deeply into the relationship between architecture and environmental politics. Her research and writings have sparked discourse on methods for architects to reconsider traditional design paradigms and embrace sustainability as a core tenet of architectural practice.
Two primary building approaches are commonly identified in architecture and design: solid versus hollow construction. These methods vary significantly across different cultures and regions, specifically for interior partitioning systems, when they appear interchangeable. Each has its own established practices influenced by local materials, labor preferences, climatic conditions, and cultural traditions. When architects and designers focus on their local context, it is easy to overlook the broader construction assumptions, limiting design flexibility and methodology. This raises an important question: How do these two building approaches differ?
Focusing mainly on interior systems, the distinctions between solid and hollow construction largely stem from the availability of materials and workforce preferences. For example, in the United States and Japan, stud walls, both wood and metal, are frequently used for partitioning. Conversely, brick remains the predominant material for partition walls in regions such as Hong Kong and southern China. Why do we build differently, and what are the benefits and challenges of each building methodology?
pixel application. Image Courtesy of Rieder Group / Florian Voggeneder
Nowadays, the concepts of reducing waste and upcycling have experienced a remarkable expansion in various fields of architecture, driven by the need to change the paradigm of consumption habits in both society and industry. This wave not only responds to sustainable approaches but has also demonstrated significant benefits in economic terms. Today, the transformation of various resources, from excavated earth to agro-waste and plastics, is being carried out to create new materials, thus consolidating the efficiency and feasibility of more environmentally friendly practices.
Within this context, technology and data have contributed significantly to a better understanding of materials and to exploring new processing methods. In this regard, artificial intelligence has become a valuable ally. In addition, innovations in software have made it possible to maximize the potential of what was previously considered waste. Correspondingly, Rieder has introduced a product innovation named pixel, aimed at minimizing waste in the production of facade elements constructed from glass fiber-reinforced concrete.
https://www.archdaily.com/1012597/transforming-waste-into-pixels-of-glassfiber-reinforced-concreteEnrique Tovar
Architecture in the Global South often embodies a rich cultural heritage and craftsmanship, incorporating vibrant colors, intricate patterns, and symbolic elements. It also tackles the challenges faced by developing economies, such as limited resources, rapid urbanization, and social inequality, by promoting inclusive and community-driven design solutions. As installations and pavilions serve as radical templates for interrogating these architectural ideals and seeking innovative solutions, we present the top architectural installations as part of our year-in-review. They encompass curated exhibitions like the Venice Architecture Biennale, as well as permanent pavilion structures in specific contexts that delve into local materials, waste reuse, and the reinterpretation of historical narratives.
No-Fines Concrete with Steel Slag Samples by L.Korat et al. (2015). Image via ResearchGate. Licensed Under CC BY-SA 3.0
The construction industry is one of the largest in the world, and cement and concrete are literally the building blocks of its success. Evolving from prehistoric caves to today’s towering skyscrapers, concrete structures have and will continue to be vital components of modern civilization, providing long-lasting, reliable support for buildings, roads, bridges, tunnels and dams. So much so that concrete is the most consumed material on Earth, second only to water, while the steel used to reinforce it is by far the most commonly used metal. But this doesn’t come without high environmental costs: concrete accounts for 8% of global CO2 emissions, much of which come from the extraction and transportation of aggregate materials such as sand, gravel and crushed stone.
Chinese city-dwellers are waking to find eight stories of construction debris outside of their homes. Over two billion tons of waste, outside Beijing and other major cities, is a result of a booming construction industry. "There's no systematic way to deal with [the garbage]," says Wilson W.S. Lu, architecture professor at the University of Hong Kong, "The illegal dumping is everywhere." Recycling efforts have just begun, but local activists believe it will require a radical paradigm shift in the way Chinese residents reclaim material. Read the full New York Times article, "China's Mountains of Construction Rubble."
https://www.archdaily.com/443367/mountains-of-construction-debris-accumulate-outside-chinese-citiesJose Luis Gabriel Cruz
