"By 2050, almost every child in the world — nearly 2.2 billion children — will be exposed to frequent heat waves." UNICEF's warning is often read as a public health forecast, but it is also a challenge to architecture and the way cities are built. As extreme heat intensifies across Asia, Europe, and beyond, thermal comfort should not be reduced to merely an indoor service delivered by machines. Air-conditioning has become a life-support system for many cities, especially in dense, humid, and rapidly urbanizing regions. Yet to rely on it as the default answer is to treat heat as something that can simply be moved elsewhere (and in the process generating extra heat) — expelled from interiors into streets, service alleys, energy grids, and the atmosphere. Its expansion increases energy demand, produces waste heat, and reinforces unequal access to comfort.

Heat, however, does not stop at the human body. It reorganizes the wider urban ecosystem: trees struggle with compacted soil and radiant paving; birds and insects lose habitat when planting is reduced to decorative greenery; aquatic systems warm, microbial life shifts, and materials absorb and release heat long after the sun has set. Heat is not simply a climatic problem to be escaped indoors. It is an urban actor that reshapes public space, labor, mobility, planting, material choices, and the fragile relationships between human and nonhuman life.

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Every year brings new ideas, projects, and shifts in architectural culture, but it also marks the loss of voices that have shaped the discipline across decades. Architecture moves forward, but it also advances through absence. When figures who helped articulate its language and its ambitions disappear, they leave behind more than completed works or influential texts. Their absence becomes a threshold, a moment in which the discipline pauses to understand what remains, what evolves, and what continues to guide us. These moments of loss remind us that architecture is a long, collective construction, carried not only by those shaping the present but also by those whose visions continue to orient how we think about cities and landscapes.

The architects and thinkers we lost in 2025 came from remarkably different worlds, yet the questions that shaped their work often intersected. Some approached the city through identity, symbolism, and historical continuity, seeking to ground the built environment in cultural memory. Others interpreted it through engineering precision, ecological systems, or radical experimentation, expanding what architecture could be and how it could be experienced. Their work spans contexts as diverse as postwar Britain, rapidly urbanizing China, Central European avant-gardes, and the evolving cultural institutions of Berlin and New York. Together, they form a spectrum of responses that defined, and continue to define, architectural culture over the last half-century, revealing the multiplicity of ways in which architecture can engage with society, technology, and the environment.

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Kongjian Yu, the pioneering Chinese landscape architect and urban planner credited with coining the "sponge city" concept, has passed away at 62. According to Reuters, he was killed in a plane crash on Tuesday in the wetlands of Mato Grosso do Sul state, in Brazil, while reportedly filming a documentary about his work, after being featured in the opening program of the São Paulo International Architecture Biennale last week.

A globally-recognized advocate for ecological urbanism, Yu gained international relevance after his "sponge city" philosophy was adopted as a national policy in China in 2013. The approach prioritizes nature-based solutions, such as wetlands, parks, and permeable pavements, to absorb and retain water. This novel method stood in stark contrast to traditional concrete infrastructure, offering cities a way to combat urban flooding and accelerate climate change by working with nature rather than against it. His ideas have since been implemented in hundreds of cities worldwide.

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In 2020, in the midst of the first wave of lockdowns due to the pandemic, the municipality of Amsterdam announced its strategy for recovering from this crisis by embracing the concept of the “Doughnut Economy.” The model is developed by British economist Kate Raworth and popularized through her book, “Doughnut Economics: Seven Ways to Think Like a 21st-Century Economist”, released in 2017. Here, she argues that the true purpose of economics does not have to equal growth. Instead, the aim is to find a sweet spot, a way to balance the need to provide everyone with what they need to live a good life, a “social foundation” while limiting our impact on the environment, “the environmental ceiling.” With the help of Raworth, Amsterdam has downscaled this approach to the size of a city. The model is now used to inform city-wide strategies and developments in support of this overarching idea: providing a good quality of life for all without putting additional pressure on the planet. Other cities are following this example.

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Every year, Earth Day, celebrated on April 22, presents us with an opportunity to contemplate the conditions of our planet and our impact upon it. Generating around 37% of global carbon emissions, the construction industry has an important, often detrimental, role to play, thus placing an increasingly urgent responsibility on architects and builders to devise strategies for reducing this number. Still, the built environment represents the habitat for most of humanity, and so it has the potential to protect and shelter people from the risks posed by the changing climate. Read on to discover a collection of articles delving into the strategies available at urban and architectural scales for mitigating the effects of climate change and minimizing the industry’s impact upon it.

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Videos

COP28, or the 2023 United Nations Conference of the Parties, was held in Dubai between November 30 and December 13. The annual meeting gathers representatives from 198 countries, as well as industry leaders to discuss and establish strategies to limit the extent of climate change and its adverse effects. The ultimate goal of these meetings is to find ways to limit the global temperature rise below 1.5 degrees Celsius compared to pre-industrial times. At the moment, the global temperature rise is already at 1.2 degrees Celsius. As the construction industry at large accounts for 39% of global emissions, architects and planners have a shared interest in the results of thee international summit, Read on to discover some of the key takeaways of COP28.

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Videos

Beijing-based landscape architect Kongjian Yu has been announced by the Cultural Landscape Foundation as the recipient of the 2023 Cornelia Hahn Oberlander International Landscape Architecture Prize (“Oberlander Prize”). Kongjian Yu has gained international recognition for his concept of “sponge cities,” a measure to address and prevent urban flooding in the context of accelerated climate change. The concept was adopted as a national policy in China in 2013, prioritizing large-scale nature-based infrastructures such as wetlands, greenways, parks, canopy tree and woodland protection, rain gardens, green roofs, permeable pavements, and bioswales. Yu has been selected by the international jury of the Oberlander Prize, recognizing him as “a force for progressive change in landscape architecture around the world.” Organized biannually, the prize aims to recognize and give visibility to landscape architecture and the ways in which it can address issues of climate change and sustainability.

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As the world grapples with the effects of climate change, natural disasters like flooding, and the spread of incontrollable wildfires are increasingly threatening cities and inhabitants. While architecture and urban planning cannot prevent these occurrences, they still possess strategies to minimize the damage associated with these events and help protect the citizens. Unfortunate events over the course of last year, like the earthquake that hit central Turkey and north-west Syria this February or the more recent earthquake in western Afghanistan, the flooding and dam failures in Libya, and the wildfires that devastated the city of Lahaina, Hawaii, demonstrate the urgency of implementing preventative and mitigation measures in addition to creating procedures for emergency intervention. This article explores the strategies and resources available to architects and urban planners to address these challenges in three types of natural disasters: flooding, wildfires, and earthquakes.

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The key to successfully designing or recovering public spaces is to achieve a series of ingredients that enhance their use as meeting places. Regardless of their scale, some important tips are designing for people's needs, the human scale, a mix of uses, multifunctionality and flexibility, comfort and safety, and integration to the urban fabric.

To give you some ideas on how to design urban furniture, bus stops, lookouts, bridges, playgrounds, squares, sports spaces, small parks, and urban parks, check out these 100 notable public spaces.

The International Placemaking Week, presented by Project for Public Spaces (PPS) is an inspiring and engaging event designed as a global gathering of placemakers from different sectors to discuss thoughts and share strategies in order to push forward the concept of placemaking in the host city and on an international level. Previous editions took place in Vancouver in 2016, Amsterdam in 2017, and Chattanooga, Tennessee in 2019.

PPS, the nonprofit organization behind Placemaking Week, helps people create and sustain public spaces that build strong communities. In 1999, they elaborated “How to turn a place around”, a book that defined the placemaking movement, creating a guideline of 11 principles to follow in order to create vibrant community spaces.

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The 2022 United Nations Conference of the Parties, more commonly referred to as COP27, was held between November 6 and November 18, 2022, in Sharm El Sheikh, Egypt. The conference included more than 90 heads of state and an estimated 35,000 representatives, or delegates, from 190 countries. Aimed at encouraging and guiding countries to take effective action against climate change, the next edition of these conferences, COP28, is already scheduled from 30 November to 12 December 2023, in the United Arab Emirates. The CEO of the Abu Dhabi National Oil Co, an oil company chief who also oversees renewable energy efforts in the Emirates, was appointed to preside over the negotiations and talks, which led to a wave of criticism from environmental activists.

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It is well known that Australia's eucalyptus forests burn periodically. This is how the eucalyptus ensures its reproduction, as its woody fruits, known as gumnuts, feature an insulating layer that breaks open under the intense heat of a fire. Once opened, the seeds blanket the scorched soil, initiating the process of forest regeneration. Australian architect Glenn Murcutt has created a body of work deeply rooted in the country's landscape. He has designed houses engineered to withstand these frequent fires, incorporating elements that contain the flames and minimize damage. In short, these buildings are constructed from highly non-combustible materials and equipped with massive water reservoirs and a "soaking system" that allows the structure and its surroundings to survive a wildfire.

Videos

Eucalyptus forests in Australia are known to burn periodically. It is the trees' way of ensuring propagation, as its fruits – known as gumnuts – have an insulating layer breaks down with the heat of the fire. Once they open, the burnt soil is covered with seeds, initiating a process of forest renewal. Glenn Murcutt, an Australian architect, has created a body of work rooted in the country's landscape. His innovative houses embrace the possibility of frequent fires, including elements that allow for fire control with the least possible loss. In short, the houses are built with very non-flammable materials, always have huge water reservoirs, and a “flood system” that allows the building and its immediate surroundings to be spared in the case of a forest fire.

Architecture is shaped by its environment and natural forces. Inherently, the discipline focuses on the design of objects over systems, on formal morphology over networks or ecologies. However, no building exists outside its context; every structure is sited among ever-changing climates and cultural conditions. How designers respond and connect to these larger systems can radically change the nature and quality of their work. Often, it is the greatest constraints that produce novel solutions.

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