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 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 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.
Architectural grafting, a concept recently popularized by Jeanne Gang inThe Art of Architectural Grafting, presents a transformative approach to urban regeneration and sustainability. Drawing inspiration from botanical and horticultural practices — where new growth is added to existing plants for enhanced resilience — this architectural method integrates new structures with existing ones, allowing them to coexist and adapt. Rather than pursuing demolition, grafting prioritizes adaptation, extending the life of buildings while safeguarding their cultural and historical significance.
While Studio Gang has played a pivotal role in advancing this method, architectural grafting embodies a broader principle that architects have long used to enhance sustainability, conserve resources, and honor heritage. Across scales — from individual buildings to urban landscapes —grafting reshapes the relationship between past and present, adapting existing structures for contemporary needs while addressing environmental demands. By reimagining historic buildings for modern use, this approach fosters a sustainable evolution of cityscapes.
Marie Combette and Daniel Moreno Flores founded La Cabina de la Curiosidad in 2019, a studio focused on architecture and territory based in Quito, Ecuador. Their architectural approach is based on extensive fieldwork, with an urban and territorial perspective that prioritizes the use of available resources, water management, and recycling. They use drawing and mapping as essential tools to materialize their ideas and transform them into spaces. The name of the studio evokes a "trunk" turned into a cabin full of curiosities that invite exploration of various possibilities. This trunk is nourished by everyday experiences, derived from simple interactions with the city or the environment, which triggers a creative process continually fed by experimentation and daily discovery, unafraid of the unknown.
The world's leading competition for sustainable design, Holcim Foundation Awards 2025, is calling for entries. The Swiss-based Holcim Foundation invites innovative projects at any scale, supported by clients and in the late-stage design phase, to compete for global recognition. The competition is free of charge with a prize pool of USD 1M and will be awarded across 20 winning entries.
Projects already under construction are eligible, provided construction is not completed before February 11, 2025. The entry window is now open from October 1, 2024 until February 11, 2025, with the Awards Ceremony taking place at the Foundation's Venice Forum event on November 20, 2025.
One of the biggest current challenges in large cities is the housing crisis and the lack of efficient solutions to mitigate its effects on citizens. This problem is exacerbated in cities where tourism and vacation or temporary housing dominate the market, distancing residents from the possibility of accessing affordable urban housing. Furthermore, gentrification, driven by rising rents and real estate speculation, contributes to the displacement of local communities, transforming traditional neighborhoods into areas exclusively oriented toward tourist consumption.
The Obel Award is an international prize seeking to highlight unconventional and original initiatives within the architectural profession. Supported by the Henrik Frode Obel Foundation, each annual award is centered around a specific theme. By exploring a different challenge of the built environment each year, the award remains open to a wide range of solutions and architectural innovations, honoring those contributions that have a positive impact on both people and the planet.
"Architectures WITH," the recently announced theme of the 2024 edition, explores participatory design, co-creation, and interdisciplinary collaboration, challenging traditional roles in architecture to foster inclusive, adaptable environments. It aims to empower all stakeholders and enhance collective intelligence in architecture.
Space exploration isn’t merely a testament to human ambition or a quest for new territories and resources. Our ventures beyond Earth’s atmosphere are driven by a deeper purpose: to understand better our place in the cosmos and to pioneer innovations that can transform life on our home planet.
Modern airports have increasingly become symbols of architectural innovation, moving beyond their primary function as transportation hubs to become significant landmarks. A prominent trend in contemporary airport design is the use of curved forms to create fluid, dynamic spaces that enhance both functionality and visual impact. These curves, made possible by advancements in construction technology, allow for more flexible and expansive interiors, as well as designs that can better integrate with natural landscapes and improve passenger circulation and experience.
The continuation of remote work practices has altered cities' bustling downtown areas along with the traditional office landscape, leaving behind many vacant spaces whose future purpose is a matter of speculation. Four years after the onset of hybrid working policies, office occupancy rates in urban centers remain lower than pre-pandemic levels, signaling a long-term shift in the work environment. Some developers have aimed to reposition these buildings while other are seeking alternative uses of vacant buildings in central location. While both approaches prove beneficial in their own ways, the potential for repurposing office buildings is vast and exciting. From residential living to cutting-edge research facilities, architects and developers explore diverse possibilities and challenges of transforming these underutilized structures into thriving new spaces.
Selected by ArchDaily as one of the Best New Practices of 2024, IDK is injecting a fresh and dynamic approach to building communities with quality architecture. Mike Lim, James Pockson and Roddy Bow met while studying for their master's degree in Architecture at the Royal College of Art (RCA and founded their architecture practice, IDK in London in 2019. The three, driven by a strong mission, to help communities and progressive institutions, organizations and cultures thrive – have been researching and delivering community-oriented projects that embody experimental building with a holistic approach. Their work focuses on nurturing social development, with an emphasis on ecological awareness, local material use, smart resource and budget management, respectful refurbishments, and designing only what is necessary without "over-building."
The use of wood in Chilean house construction reflects the utilization of a renewable resource available in the country. Moreover, it can be an extremely sustainable material when produced and processed under certain conditions, as it can have a very low carbon footprint. It is characterized by its warmth, resistance, and durability as a construction system.
In 1853, at the New YorkWorld Expo, a man climbed onto a suspended platform and ordered the rope supporting it to be cut. He dropped a few inches, but the safety system activated, and the platform remained stable, to the delight of the watching crowd. At that moment, perhaps not even Elisha Graves Otis realized how his invention would permanently change the course of architecture.
Located in Mexico City, the municipality of Iztapalapa has some of the most densely populated areas within the metropole. Serving a population of 1,800,000 people, many of them with lower incomes, the municipality struggles to provide sufficient public spaces and amenities. In an effort to correct this, the administration set out to take underutilized and abandoned plots of land and transform them for public use. Utopia Estrella is one of these initiatives. Located near Mexico City’s largest water treatment plant, the project combines a socially engaging architectural program with a pedagogical approach to the role of water infrastructures in the larger ecosystem. Designed by Cano Vera Arquitectura, the project has been recognized as the Gold Prize Winner of the Holcim Awards 2023 for Latin America. In a video interview for ArchDaily, Juan Carlos Cano of Cano Vera Arquitectura discusses the impact of this project, its goals, and the unique conditions that led to its development.
3XN GXN has revealed its design for Mahler 1, a 15-storey mixed-use office building. The structure, developed in collaboration with Victory Group, Icon Real Estate, and Erik Dhont Landscape Architects, features a hybrid-timber construction system that creates a stepped volume, breaking down the building’s mass. At the street level, the development offers a wide variety of public amenities, striving to become an active hub for both residents and office workers. The project is expected to begin construction in the first half of 2025 and conclude in late 2027.
Organizing, shaping, stacking. Transforming raw materials from the soil into architecture. This is a challenge that many Latin American architects embrace, demonstrating that scarcity can be daunting but also a rich opportunity to unleash creativity.
The use of materials extracted from the local soil serves a dual purpose. In regions with limited industrialization, using locally sourced materials makes economic sense because industrial materials such as concrete and steel are expensive and often require long-distance transportation, adding to their cost. Environmentally, choosing locally sourced materials from the start of a project reduces transportation needs and carbon emissions, supporting sustainability efforts.
