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Inverting the conventional narrative, this story begins at the end. The day after the world's collapse. While almost the entire population struggles to survive flames and solar storms, a tiny fraction is greeted by a heavily armed guard at the entrance to the Survival Condo Project, a former missile silo in Kansas converted a few years ago into luxury apartments.

Forget, then, the hermit who stockpiles canned food in his basement or the end-times prophet. In recent years, survivalism has expanded into wealthier circles, taking root in Silicon Valley among technology executives and hedge fund managers. What could once be seen merely as an eccentricity has also become a way of thinking about the future and, for some, an investment.

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As one walks along the beachfront of Barcelona, the shoreline feels like it has always been there: sand, palm trees, a long promenade, restaurants, shops and modern hotels, when the reality is that it has not always been this way. Until the 1980s, Barcelona's seafront was a working barrier of railway lines, factories and informal housing, and wastewater ran straight into the Mediterranean. Starting in 1987, Barcelona has continuously created large promenades and passages between the city and the sea, creating an environment that today many might read as previously empty space, but is actually the result of decades of infrastructure and social complexity, along with a municipal effort to transform the city's territory and its relationship to the water. Following that transformation raises three questions that frame this article: who was displaced to open the waterfront, who governs it today, and who keeps it standing?

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The buildings and construction sector accounts for around 39% of global CO₂ emissions and nearly 50 per cent of global material extraction. Operational carbon emissions which are associated with the energy consumed to run the buildings also rose by 1% to 9.9 billion tonnes of CO₂ in 2024, even as building energy use intensity (EUI) has improved. These figures point to persistent gaps in the way buildings are designed, constructed and upgraded. One important area for closing those gaps is the building envelope insulation, which remains central to controlling energy demand, improving thermal resilience and reducing carbon emissions.