Overview
- Researchers at The Hong Kong University of Science and Technology published a peer‑reviewed study on Thursday that reports a printable slurry of sand, gelatin and engineered yeast can be hardened under simulated Martian pressure and temperature.
- The team 3D‑printed wine‑cork‑sized domes that freeze‑dried into a porous foam and measured compressive strength of about 10 to 12 megapascals, a range comparable to low‑grade concrete.
- The method uses Mars’s low pressure and cold to sublimate ice directly to vapor so printed wet material hardens without high‑temperature melting, which would cut the energy needed for construction.
- Key gaps remain before field use: the researchers have not shown the engineered yeast can survive real Martian radiation and atmosphere, and early deployment would likely need hundreds of tons of Earth‑supplied inputs.
- The work joins other biology‑forward ideas for off‑world habitats and, if survivability and in‑situ production can be solved, could enable recyclable building cycles where settlers recover and regrow microbial binder for new structures.