The installation and exhibition representing Estonia at the 19th International Architecture Exhibition of La Biennale di Venezia is curated by architects Keiti Lige, Elina Liiva, and Helena Männa. Titled Let Me Warm You, the national exhibition explores different dimensions of sustainability by questioning whether insulation-driven renovations in Estonia are simply compliance measures to meet European energy targets or whether they can also serve as opportunities to enhance the spatial and social quality of mass housing districts. To make this point, the Estonian installation will cover the façade of a Venetian building with insulation panels, replicating how they are commonly installed in Estonia for mass housing renovations.
Santuario de la Naturaleza Humedal Río Maipo.. Image Courtesy of Fundación Cosmos
On Earth Day 2025, observed annually on April 22, we are once again reminded of the urgent environmental and sustainability challenges that face our planet—challenges that continue to evolve alongside global economic, political, and cultural shifts. The building and construction industry remains one of the most critical sectors in the effort to manage and reduce global carbon emissions. This year, these issues are being addressed through increasingly diverse lenses, calling for more holistic and integrated approaches. It's vital that we view sustainability not as a one-size-fits-all solution, but as a multi-scalar effort—one that spans from large-scale urban development and strategic planning, to the advancement of sustainable materials, and even to temporary, thought-provoking interventions like exhibitions and installations. In doing so, we reaffirm our commitment to reducing our collective carbon footprint, while shaping a built environment that promotes human well-being and planetary health.
The decision to lift a building off the ground is a technical maneuver that requires substantial planning, expertise, and careful consideration. It is a deliberate architectural response to the site's forces and fragilities. Floodplains, wetlands, and thawing tundra share a common thread: Architects reconcile risk and vulnerability through elevated structures. In this sense, it is a spatial response and a structural necessity.
How can architecture professionals transform the atmosphere of a structure? What kinds of interventions can go beyond adaptive reuse to modify spatial perception? As architectural structures are repurposed over time, new uses and needs emerge between spaces and their users. While the structures of old buildings keep the memory of communities alive, the introduction of new life through greenhouses, housing, commerce, offices, or cultural centers brings about new atmospheres where light, ventilation, the integration of nature, and other elements reshape interior experiences.
Forests are among the most complex yet vital ecosystems on Earth. They regulate climate, support biodiversity, and sustain human communities. With the growing realities of climate change and environmental degradation, architects, planners, and engineers now face a new imperative: designing within forests in ways that sustain the ecosystems on which they depend.
Sustainability in architecture is often framed as a universal challenge, leading to standardized solutions that prioritize efficiency over context. However, architecture is inherently tied to its environment — buildings interact with climate, topography, and cultural history in ways that demand specificity. Instead of relying on standardized sustainability checklists, how can architecture embrace site-specific solutions? This conversation is deeply connected to the concept of Genius Loci, or the spirit of a place, introduced by Christian Norberg-Schulz and embraced by architects advocating for designs that resonate with their surroundings. It suggests that architecture should not be imposed upon a site but rather emerge from it, informed by its materials, climate, and cultural significance. This philosophy challenges the widespread application of generic sustainable technologies, instead proposing that sustainability must be inherently tied to the location in which it operates.
The design incorporates a specific type of low-carbon concrete, which aims to emit 30% less CO₂ than standard concrete. The prototype will be featured in the Time Space Existence exhibition, organized by the European Cultural Centre.The goal of the project is to test the sustainability of a housing prototype in response to the ongoing climate and humanitarian crises.
Modernism emerged in the early 20th century as a revolutionary movement that rejected historical styles, prioritizing functionality, innovation, and rationality. Grounded in the promise of industrial progress, architects like Walter Gropius, Le Corbusier, and Ludwig Mies van der Rohe championed using new materials and construction methods, striving for a universal architectural language. Their work introduced radical ideas: open floor plans, expansive glazing for natural light, and pilotis that elevated structures, symbolizing a new architectural era. However, alongside its groundbreaking ideas, modernism's relationship with sustainability has sparked ongoing debates.
While modernist architects sought to address social and economic challenges through affordable housing and efficient design, their reliance on energy-intensive materials like concrete and steel created unintended environmental consequences. The large-scale industrialization celebrated by modernists often disregarded local climates and ecological systems, leading to inefficiencies. Yet, the principles of functionality and adaptability embedded in modernist architecture laid the groundwork for what we now recognize as sustainable practices. From Le Corbusier's rooftop gardens to Frank Lloyd Wright's integration of nature, the seeds of environmentally conscious design were undeniably present, albeit limited in their execution.
The housing crisis, the need for effective land management policies, and the growing demand for housing aid are global challenges, and Spain has taken significant steps to address these issues in recent years. While this effort is closely tied to rehabilitating obsolete buildings, it also tackles the challenges of densification and gentrification. These factors have prompted the exploration of new housing models and ways of living, leading to the development of affordable residential buildings designed to accommodate large numbers of inhabitants while maintaining high-quality living standards.
Sustainability has been a central theme in architectural discussions for years, encompassing not only the profession’s role in combating climate change and transitioning to low-carbon economies but also preserving cultural heritage and celebrating vernacular traditions. In 2024, a wave of projects and studies stood out for their innovative use of natural materials, particularly in the Global South. These initiatives skillfully blend creativity and technology with renewable resources, demonstrating how architecture can deliver high-quality spaces that align with contemporary demands for sustainability and environmental responsibility.
The concept of low-tech architecture recognizes the impact of carbon-intensive technologies and building practices and proposes an alternative: a rediscovery of practical, rational, locally adapted solutions that count on smart design strategies instead of energy-intensive devices to ensure a safe, comfortable living environment. Far from being a regressive approach, the term remains open to innovations but seeks to rebalance the industry's reliance on mechanization. It thus favors an architecture of fewer components, minimized dependence on high-tech solutions, and a preference for low-embodied carbon materials.
In 2024, a diverse range of topics have been comprehensively explored, some focusing specifically on architectural details and construction systems. These articles provide valuable insights into architecture's often-overlooked technical and functional aspects. By shifting attention away from aesthetics, materials, and spatial massing, they reveal the importance of intricate details and the construction systems underpinning contemporary projects' larger architectural vision.
Executing these seemingly small elements is crucial in shaping how architecture is perceived and experienced. Specifying and drawing a thoughtfully designed detail is not dissimilar to determining the correct screw in building a car—its thread count, material, and length—can dramatically influence not only the success of an architectural design but also the quality of the human experience it fosters. Such details, while often dismissed as mundane and may not be the most recognizable features of stellar projects, profoundly impact the cohesiveness and functionality of architectural projects.
Temporal Shift by Sahar Coston Hardy. Image Courtesy of Grace Farms
Design for Freedom, an initiative launched by Grace Farms Foundation, has released an updated International Guidance & Toolkit designed to help architects and construction professionals source building materials ethically and avoid products linked to forced labor. The comprehensive online resource addresses the critical issue of forced labor within global supply chains, offering practical tools and strategies for implementation. The toolkit provides detailed information on twelve high-risk materials commonly used in construction, including glass, concrete, steel, timber, and bricks, highlighting the often inhumane conditions under which they are extracted and produced. The release of the guide coincides with Human Rights Day, further highlighting the urgency and global importance of addressing forced labor in the construction industry.
The Aedes Architectural Forum in Berlin presents over the next two months the trajectory and works of Christoph Hesse Architects. The exhibition, titled "Rural Rebellion," focuses on the studio's architectural projects that address the challenges of working in rural areas, particularly in Korbach—Hesse's hometown—and other villages across Germany. It highlights how the practice reimagines and reinterprets traditional building methods, translating them into contemporary contexts while emphasizing a collective and collaborative approach to architecture.
The 29th United Nations Climate Change Conference (COP29) took place in Baku, Azerbaijan, from November 10 to November 24, 2024, amid a backdrop of escalating climate challenges. For cities, the epicenters of population growth, economic activity, and climate vulnerability, the outcomes of COP29 are particularly significant. As urban areas contribute over 70% of global carbon emissions and housing more than half of the world's population, their consideration is pivotal in shaping global responses to the current crisis. In fact, cities are on the frontlines of the crisis, facing record-breaking heatwaves, catastrophic floods, and increasing economic losses from extreme weather events. In 2024 alone, urban areas worldwide experienced devastating climate impacts: flooding displaced millions in Africa, droughts crippled urban economies in South America, and storms caused widespread destruction in North America and Europe. The outcomes of COP29 directly affect urban planning, architecture, and sustainability efforts. From commitments to climate finance and carbon markets to renewable energy and resilience-building, the summit's decisions provide a roadmap for transforming cities into hubs of climate innovation and adaptation. Below are the key takeaways from COP29 for the built environment and urban spaces.
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.
The 29th Conference of the Parties to the UN Framework Convention on Climate Change (COP29) takes place between the 11th and 22nd of November in Baku, Azerbaijan. The event proposes a global gathering of business leaders, governments, and civil society with the aim of taking effective measures to limit global warming to 1.5°C above pre-industrial levels. As the construction industry is responsible for approximately 37% of global emissions, the conference is of particular interest to architects, urban planners, and researchers in this field.
By now, most people in the construction industry know that addressing the carbon emissions that come from the built environment is key to solving the climate challenge. Yet, knowing where to start can be a challenge for many professionals. That's why education and upskilling across the value chain—from architects to urban planners, and real estate developers to engineers—are essential to fostering sustainable construction practices.
