life cycle: The Latest Architecture and News

Images of the benches at New York City's High Line Park spread around the world when the project opened in 2009. Emerging diagonally from the same material and modular pattern as the paving, they transition seamlessly from concrete to wood, evoking the railway tracks that once occupied the site. To withstand decades of exposure to the elements, the project required a wood species of exceptional durability, and ipe, harvested from the Brazilian Amazon, was selected. Its slow growth produces a dense, low-porosity hardwood that is naturally resistant to wear, moisture, and biological decay. The choice, however, sparked controversy at the time amid concerns over the certification of the timber's forest management. This broader view changes how we think about materials. Their origin still matters, but so does what happens after the building's life comes to an end.

What will the future of steel be? How can this material build the foundation for sustainable economic development and the transition to a low-carbon society?

Steel plays an essential role in modern societies, shaping countless aspects of daily life and supporting sustainable development through its contribution to the built environment, transportation, and energy infrastructure. From automobiles and buildings to cargo ships and refrigerators, steel is a durable and versatile engineering and construction material with a distinctive strength-to-weight ratio compared with other building materials. By offering fast, durable, and flexible solutions with temperature control and resistance to extreme weather conditions, steel has become an integral part of modern construction systems. Its long-term performance also places it at the center of the debate on how to transition toward a lower-carbon world.

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Bamboo is often praised before it is understood. It grows quickly, carries a long history of building cultures, and appears to offer architecture an immediate ecological language. In photographs, it can seem almost self-explanatory: light, natural, renewable, and already aligned with a more sustainable future. Yet this apparent clarity is also what makes bamboo difficult to discuss with precision. Once it becomes a symbol of environmental responsibility, the material itself can disappear behind the image it produces.

This is the risk of bamboo's contemporary revival. It can be imagined too easily as a green substitute for industrial materials, a regional atmosphere, or a softer alternative to the harder languages of steel and concrete. In each case, bamboo is admired before its conditions are understood. The more important question is not whether bamboo is sustainable in a general sense, but what kind of architectural culture it requires: what forms of knowledge, maintenance, regulation, labor, and time are needed for its sustainability to become real.

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Produced on an industrial scale since the 19th century, steel has profoundly transformed the way we build. Iron, refined through controlled metallurgical processes, has given rise to a material capable of combining mechanical strength, relative lightness, and constructive precision, making possible some of the major achievements of modern engineering and architecture. From skyscrapers and bridges to facades, roofs, and industrialized systems, few materials have had such a significant impact on shaping the built environment.

However, the quality of a material cannot be measured solely by its initial structural performance or its appearance at the time of delivery. Although buildings are often evaluated when they are completed, their true performance only reveals itself over time. Photographs record impeccable facades, newly installed surfaces, and spaces ready for use. The following decades, however, expose these constructions to solar radiation, rain, humidity, salinity, air pollution, and thermal variations. It is in this continuous contact with the environment that material choices are effectively put to the test.