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.
Urban living has become synonymous with limited space and creativity for compact apartments. As cities become more dominated by concrete and steel, there is an exciting, yet unsurprising, rise in interest in embracing the green thumb, even within the constraints of a dense urban environment. This interest is not purely to tend aesthetic tastes, as studies consistently show that exposure to nature reduces stress, improves focus, and enhances overall well-being. However, in dense urban environments, the challenge lies in finding innovative ways to make this vision a reality for apartments where every inch matters.
Schmidt Hammer Lassen (SHL) from Denmark and Assar Universum Architects from Luxembourg have collaborated to design a new urban hub for Hollerich in Luxembourg. The new development aims to create a green, vibrant space with mixed uses, transforming the area into an urban destination. Harnessing the city’s distinctive topography, the design integrates a dynamic program of residential, commercial, cultural, and public spaces. The hub, named “NEI HOLLERICH,” is also envisioned as one that addresses the need for affordable housing.
The “Green Obsession” campaign launched by Stefano Boeri Architetti has been declared the winner of the SDG Action Awards, the most important recognition of projects that support the United Nation’s 17 Sustainable Development Goals. As part of the SDG Action Campaign, the United Nations set out to reward initiatives that “mobilize, inspire and connect communities in order to promote positive change.” The winning initiative aims to help improve the relationship between nature and design by implementing the principles of urban forestation. Green Obsession represents a series of conferences, public programs and a book, “Green Obsession: Trees Towards Cities, Humans Towards Forests”, published in 2021 and supported by the Graham Foundation.
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.
Kuwait is planning a 1,600-hectare development that will provide residential units, jobs, and amenities for 100,000 residents. Developed by URB, the ambitious project aims to promote a sustainable lifestyle with high standards of living, yet a low impact on the environment. The masterplan for the smart city is designed to optimize density and amenities distribution to create a walkable city, while also optimizing the green space ratio. This will help mitigate the effects of rising temperatures and the urban heat island effect. The green transportation systems and dedicated cycling tracks will make this a car-free city, apart from a ring road that allows for limited vehicular access. The city also promotes a circular economy that aims to provide food and energy security for the residents.
Interior view to the Lobby . Image Courtesy of UNStudio
Incorporating the Environmental, social, and corporate governance objectives, the 45,000 m2 Office Tower in the Europaviertel in Frankfurt aims to be one of Germany's most sustainable office buildings. Designed by UNStudio in partnership with Groß & Partner in collaboration with OKRA landscape architects, the project focuses on environmental and social sustainability as an integral part of Frankfurt's green network. The ecological agenda includes a low-carbon load-bearing structure and recyclable construction materials. The architecture program offers a public urban space to add value to its surroundings to encourage communication and gathering.
Nature has continually played muse to architects. Colors and forms from the natural world find themselves embedded in artificial edifices. Buildings are also shaped by patterns of the wind and sun, topography, and vegetation. While architecture is informed by the effects of nature, buildings have been proposed as inert objects that remain static in a biologically evolving world. Anthropocentric concrete “jungles” are devoid of life, separating humans from natural environments and causing imbalances that have manifested as pandemics. What would cities look like if there were no boundaries between humans and ecosystems?
PARKROYAL COLLECTION Pickering, designed by WOHA and Tierra Design. Image Courtesy of WOHA
Singapore as of late is continually building its reputation as a City in Nature, with Singaporean design long having a strong consciousness to acknowledge that green spaces matter. Urban planners and architects alike have taken a conscientious decision to weave in nature throughout the city as it continues to uproot new buildings and developments, incorporating the implementation of plant life in any form, whether it be through green roofs, cascading vertical gardens, or verdant walls.
This article will explore the pioneering actions taking place in Singapore to create a more biodiverse city and nation, and how this provides a view of how other major cities can adopt similar initiatives over the next decade to provide a blueprint for the future.
Dequindre Cut, Detroit / The High Line Network, SmithGroup. Image Courtesy of The Dirt
Decades of redlining and urban renewal, rooted in racist planning and design policies, created the conditions for gentrification to occur in American cities. But the primary concern with gentrification today is displacement, which primarily impacts marginalized communities shaped by a history of being denied access to mortgages. At the ASLA 2021 Conference on Landscape Architecture in Nashville, Matthew Williams, ASLA, with the City of Detroit’s planning department, said in his city there are concerns that new green spaces will increase the market value of homes and “price out marginalized communities.” But investment in green space doesn’t necessarily need to lead to displacement. If these projects are led by marginalized communities, they can be embraced.
On a recent day in Santa Monica, California, visitors sat in the shaded courtyard outside City Hall East waiting for appointments. One of them ate a slice of the orange she’d picked from the tree above her and contemplated the paintings, photographs, and assemblages on the other side of the glass. The exhibit, Lives that Bind, featured local artists’ expressions of erasure and underrepresentation in Santa Monica’s past. It’s part of an effort by the city government to use the new soon-to-be certified Living Building (designed by Frederick Fisher and Partners) as a catalyst for building a community that is environmentally, socially, and economically self-sustaining.
Understanding what drives economic, social, and educational disparities between communities is one of urbanism’s most critical and highly-discussed topics. It’s an increasingly complex issue, with many factors at play- one of them being the design and location of desirable urban green spaces. While sometimes they are a tool that helps to bolster underserved communities in terms of health and economic benefits, safety, and climate resistance, other times they can actually drive out the residents that they are created to serve. Now, the challenge lies in how to design these recreational sites to create better futures for all.
Imagine having a blank canvas on which to master-plan a brand new city; drawing its roads, homes, commerces, and public spaces on a fresh slate and crafting its unique urban identity. Every urban planner has fantasized about designing a city from scratch and luckily for some, this dream is morphing into concrete opportunities.
Over the last two decades, new, master-planned cities have emerged from the ground up at an unprecedented scale, the majority of which have been created in Asia, the Middle East, Africa, and Latin America, with currently over 150 new cities in the making. This new type of urban development has shown to be particularly seductive in emerging markets, where they are sold as key parts of the strategy to leapfrog from agriculture and resource-based systems to knowledge economies by attracting foreign capital and boosting economic growth.
This week’s curated selection of Best Unbuilt Architecture encompasses conceptual proposals submitted by our readers. It features diverse functions and tackles different scales, from a spiraling bridge in China to a transportation hub dedicated primarily to space travel in Japan.
Comprising uncommon design approaches, this article introduces a humanitarian architectural response to the needs of the residents in an informal Egyptian settlement. In the master plan category, a Green city proposal highlights how we should develop our cities and neighborhoods in the future, and the first net-zero energy airport in Mexico reinterprets holistic design approaches. Moreover, the roundup presents different cultural interventions, from a museum in Botswana, an installation at the Burning Man festival by AI Studio, and an observatory in Vietnam.
Bjarke Ingels Group and WXY architecture + urban design, in collaboration with the Downtown Brooklyn Partnership, imagined a new future for Downtown Brooklyn. The proposal introduces a greener, safer approach for a pedestrian-friendly neighborhood.
Commisionned by Grupo Karim's, and designed by Stefano Boeri Architetti, the first Smart Forest City in Mexico will focus on innovation and environmental quality. The city balances green and built spaces, and is completely food and energy self-sufficient.
The ever-growing list studies cities both around and beyond the USA, using an innovative metric called the “Green View Index,” which uses Google Street View panoramas to evaluate and compare green canopy coverage in major cities. Through monitoring the urban tree coverage, citizens and planners can see which areas in their city are green and not green, compare their green canopy with other cities, and play a more active role in enhancing their local environment.
https://www.archdaily.com/899519/tree-coverage-in-10-major-cities-around-the-worldNiall Patrick Walsh
While the term “ecosystem services” may sound like a corporate antithesis to the course of natural order, it is actually an umbrella term for the ways in which the human experience is favorably altered and enhanced by the environment. Ecosystem services are therefore an important factor in creating cities which provide the maximum benefit to their residents with the minimal harm to their environment.
Aiming to find out how city planning can affect the provision of these ecosystem services, a new study published in Frontiers in Ecology and Environment by researchers at the University of Exeter's Environment and Sustainability Institute and Hokkaido University's Division of Environmental Resources evaluates the repercussions of rapid and fragmented urbanization and the possible detriment to ecosystem services and human well-being. In particular, the study is concerned with approaches to land-use and the outcomes they yield on the environment. Studied are two opposing tactics: a “land-sharing,” sprawl model (think Atlanta or Houston), or “land-sparing,” tight-knit urbanism (think New York or Tokyo).
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