Australia is embracing innovative, nature-based solutions in the construction industry, with materials like algae bricks and oyster shell walls gaining attention as sustainable alternatives to traditional building supplies. Algae bricks, developed by researchers at the University of Colorado and now drawing global interest, are made using photosynthetic microorganisms that absorb carbon dioxide during production, making them carbon-negative. Similarly, oyster shell walls—composed of recycled marine waste—are being explored for their durability, thermal insulation, and potential to reduce coastal pollution by repurposing aquaculture by-products. These materials not only cut emissions but also promote circular economy principles by turning waste into resources.
In Australia, where the construction industry accounts for nearly 18% of the nation’s carbon footprint, these innovations present critical pathways to reduce environmental impact. Architects and builders are partnering with environmental scientists and universities to prototype green buildings using these novel materials. Pilot projects in coastal cities are already demonstrating the viability of oyster shell concrete in public infrastructure, while algae-based composites are being tested for use in thermal panels and facades. As climate challenges intensify, these biomaterials could play a vital role in redefining urban design, combining performance with environmental regeneration. More