Engineered yeast, gelatin, sand yield 3D-printable Martian building material

Researchers in Hong Kong report a low-cost 'living' construction material—genetically engineered yeast, gelatin, and sand—that can be 3D printed under simulated Martian conditions, potentially reducing the need to transport materials from Earth or melt soil. The study, published in Chem Circularity, is at proof-of-concept stage; scalability and real-Mars performance remain unverified. This advances in-situ resource utilization for future Mars habitats, though near-term market impact is negligible.