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In 1952, American composer John Cage presented his groundbreaking piece "4'33''" for the first time. In it, the orchestra produces no intentional sound for four minutes and thirty-three seconds. What can be heard instead are breaths, movements, and subtle noises that would normally go unnoticed, but here become part of the composition itself. With this work, Cage revealed that absolute silence does not exist. There is always sound, even when unplanned.

In the same way, every architectural space has its own soundscape. Sound moves, reflects, reverberates, and dissipates according to the materials, volumes, and surfaces it encounters. Hard walls and high ceilings can amplify echoes, while fabrics and porous panels soften them. Acoustics, therefore, is not merely a technical concern but a form of materialized listening, a science that operates at the boundary between perception and emotion. For this reason, it is also complex. Each typology, whether a museum, temple, studio, or theater, has its own sonic logic, and understanding these nuances is essential to creating spaces that embrace sound, voice, and silence with equal precision.

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Coldefy, in collaboration with Relief Architecture, has completed the Robert Badinter Secondary School, the first timber-framed school in northern France. Designed to accommodate 650 students, the project is situated on a former railyard adjacent to the city's train station and within walking distance of the town center. The new school forms part of a wider urban renewal strategy aiming to consolidate transportation links and introduce new civic amenities to the area.

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From building codes to mobility restrictions and new diplomatic roles within city governments, climate policy is increasingly being shaped at the local level through a widening range of legislative and institutional tools. Cities as varied as Sydney, Boston, New York, Paris, Miami, and dozens across Latin America are adopting targeted strategies that reflect their distinct environmental pressures and governance structures. These initiatives range from all-electric and net-zero construction requirements, to traffic-control measures designed to curb the social costs of private vehicle use, to emerging forms of urban diplomacy that coordinate responses to rising temperatures and biodiversity loss. Together, these approaches illustrate how territorial management is evolving in response to the accelerating climate crisis, and how local governments are experimenting with regulation and collaboration to confront challenges that are at once global and deeply place-specific.

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