The opening page of Natura Futura’s digital portal hints at the studio’s distinctiveness: a spare title in all caps sans-serif, a minimal navigation menu that files the portfolio of work under Acciónes. Below these, eight photographs of built structures tightly cropped around material assemblies: porous and solid bond masonry walls; round log and raw timber frames; louvered wood shutters that open whole interiors onto city streets; a bamboo-log framed greenhouse under plastic sheathing; a wall built of wood pallets crowned by log struts fanning, umbrella-like, under the generous eaves of a corrugated metal roof; a tiny, meticulously crafted, wooden shelter for stray cats along an urban walkway. The photographs’ focus on artifacts fits the mold of high-design firm websites, but their close cropping, material palette and odd range of building programs pull in another direction. Natura Futura’s focus on building is both artifactual and processual: how things are built opens onto questions of who builds and with what materials and resources, drawing into play environmental and urban futures, livelihoods and material practices present and past, global pressures and local consequences. The site of Natura Futura’s building/s, as the project descriptions make clear, extends well beyond the built artifact to their registration in reverberating circles of impact and effect. What makes the work of Natura Futura Arquitectura distinct—and of great relevance for Seeding Urban Transformation—is that the built, material detail is not the end of design, but a kernel of architectural work conceived as action. The studio’s dialogical approach to building recalls what the political philosopher Hannah Arendt observed about human action, which springs from a world that precedes it and reshapes that world in its wake.