In light of the looming climate crisis and the pursuit of sustainability, the concepts of revival and reuse have emerged as crucial strategies in the quest for decarbonization in the architecture industry. These principles preach that creating new structures may be sustainable but encourage architects to minimize their ecological footprint by reactivating and recycling existing resources. This year specifically, innovative projects in line with these themes were displayed as part of the 18th International Architecture Exhibition – La Biennale di Venezia. This world-renowned event’s core purpose is to serve as a platform for architects, designers, and thinkers to collectively reimagine sustainability, decarbonization, resource conservation, and the industry's future.
The built environment is responsible for approximately 42% of annual global CO2 emissions. During a building's lifespan, half of these emissions come from its construction and demolition. To decarbonize architecture and control global emissions, it is important to rethink and reduce the upfront or embodied carbon impacts of demolitions, as well as implement sustainable construction strategies for buildings. Demolitions typically involve dismantling, razing, destroying, or wrecking buildings and structural parts, leading to unsustainable levels of carbon emissions, material depletion, waste, and pollution. These hasty methods of ending the life cycle of a building have negative impacts on the environment, material components, and recycling strategies. Therefore, there is a clear need to re-think the way in which we approach the end of a building or infrastructure project's life towards a more sustainable system of deconstruction.
Center for Computing and Data Sciences, Boston University / KPMB Architects + Suffolk. Image Courtesy of KPMB Architects
Decarbonization of the building sector is no longer a choice but a necessity. As nations strive to curb their greenhouse gas emissions by 2050, it is increasingly clear that current building standards do not go far enough to drive tangible change. Achieving climate goals requires economies to advocate measures that drive carbon neutrality while managing associated costs effectively. How would net-zero performance strategies impact building costs?
Seratech's technology, developed by Sam Draper and Barney Shanks, eliminates the CO₂ footprint of concrete and reduces carbon emissions in construction. This innovative process uses silica, a waste product from flue gases, as a carbon-negative cement replacement in concrete. By incorporating silica, the required amount of Portland cement is reduced by 40%, resulting in the production of carbon-negative concrete. This groundbreaking technology won the 2022 Obel Award for its focus on embodied emissions.
The Obel Award is an international award that promotes architecture in the service of both people and the planet. Seratech was the fourth winner of this new international prize for architectural achievement, preceding this year's 'Living Breakwaters' by SCAPE Landscape Architecture. ArchDaily had the chance to interview Sam Draper, CEO of Seratech, about the company's role in building a sustainable construction industry and their plans for scaling their innovative process.
As we understand it today, the sustainable architecture movement began to take shape at the end of the 20th century. Essentially, it responds to growing concerns about environmental degradation, energy consumption, and resource scarcity. In this global discourse on sustainable architecture, wood has long been celebrated as a symbol of environmental consciousness and decarbonization. As one of the most widespread building materials, it has gained popularity with the rise of this movement. This is because trees absorb carbon dioxide during their growth, which stays in the wood during its construction use, keeping it out of the atmosphere.
For the opening of CAB 5, the 5th edition of the Chicago Architecture Biennial,Skidmore, Owings & Merrill (SOM) presented an eco-friendly alternative to traditional concrete. Named the “Bio-Block Spiral,” the installation is at The Mews in Fulton Market in Chicago. The creation was developed with Prometheus Material, a materials company that provides sustainable building materials for a carbon-negative future.
By the time I was 17 years old, I had moved 11 times. Because of my own experience relocating from one place to another, I’ve spent the better part of the last several decades focused on making sure that everyone has a place to call home, that everyone enjoys the human right to housing. But it was not until my time at Enterprise Community Partners, a nonprofit focused on community development and affordable housing, that I realized the methods and materials we employ to realize that human right matter.
The window for solving climate change is narrowing; any solution must include embodied carbon. TheSixth Assessment Report published by the IPCC (Intergovernmental Panel on Climate Change) concludes that the world can emit just500 gigatonnes more of carbon dioxide, starting in January 2020, if we want a 50 percent chance of staying below 1.5 degrees. In 2021 alone, the world emitted about36.3 gigatonnes of carbon, the highest amount ever recorded. We’re on track to blow through our carbon budget in the next several years. To quote the IPCC directly: “The choices and actions implemented in this decade will have impacts now and for thousands of years (high confidence).”
Landscape architecture is having a moment. The latest proof: last week, the US Department of Homeland Security decided to accredit the field with its prestigious STEM designation. As part of the science, technology, engineering, and mathematics (STEM) educational disciplines that fall under this category, landscape architecture students can now spend an additional 24 months seeking employment and training post-graduation in the United States after an initial period of a year granted to all graduates. The title also promises more prestige, higher entry salaries, and additional career flexibility. Torey Carter-Conneen, CEO of the American Society of Landscape Architects (ASLA), calls the development a significant advancement for 'landscape architecture education and practice, and that is great for America and the global community.'
The news corresponds to a growing emphasis on landscape architecture as a pivotal practice around the globe in recent years – one that is closely connected to notions of public health, environmental design, biophilia, sustainability, and re-wilding. It also underlines the intimate relationship between technology and the discipline. Landscape proposals increasingly rely on advanced science and technology to predict how ecological interventions might alter an existing terrain and determine what measures will yield the highest benefit for both humans and nature. The contemporary ideal of wild meadows and biodiverse forests may exist free from external influence, but the path to get there requires assistance.
ArchDaily and VELUX have joined forces to provide you with an exclusive coverage of the highly anticipated UIA World Congress of Architects 2023. Watch Sebastian Peck from KOMPAS VC and Liz Gilligan from Material Evolution explain a revolutionary low-carbon cement produced from industrial waste, and how can it help to decarbonize architecture by reducing a building's carbon footprint by 85%.
Every year since its establishment in 1970, Earth Day aims to bring into focus not only the increasingly threatening effects of climate change but also highlight the effective measures and adaptation efforts that can improve the quality of our environment. This year’s event comes after a report from the United Nations’ Intergovernmental Panel on Climate Change (IPCC) in March, which presented another warning on the magnitude of changes produced by human-induced global warming and its impact on people and ecosystems. The same report does offer some hopeful prospects as well, showing that adaptation measures can build resilience, but those urgent systemwide transformations are needed to secure a net-zero future. In response to these findings, the 2023 Earth Day is focused on the theme of “Investing in Our Planet,” as an encouragement for governments, institutions, businesses, and civil society to accelerate the change. Read on to discover several citywide initiatives aligned with these objectives of building resilience and a more sustainable future through legislation, civic involvement, and innovative systems.
