This research explores using mushroom-based materials to create large building components as an environmentally-friendly alternative to traditional construction materials. The scientists developed methods to grow wall structures using living fungal materials that can be composted at the end of their life, rather than ending up in landfills. Impacts on everyday life: • Offers a sustainable alternative to foam insulation and other petroleum-based building materials • Could help reduce construction waste and environmental impact of buildings • Demonstrates new possibilities for temporary structures that can be fully composted • Provides a model for local material production that reduces transportation costs • Opens opportunities for more sustainable and circular building practices