The construction industry, responsible for 8–10% of global CO₂ emissions, faces a reckoning. Concrete and steel—cornerstones of modern cities—are both environmental liabilities. Cement production alone generates 2.5 billion tons of CO₂ annually, while steelmaking guzzles energy at scorching temperatures. These materials also degrade over time, crumbling under stress, weather, and conflict in vulnerable regions. But a…
