Martian homes could be 3D-printed from yeast and jello

Mars astronauts could live in houses made of yeast and jello, say scientists

Researchers at The Hong Kong University of Science and Technology and The Hong Kong Polytechnic University have developed a method to 3D-print structures on Mars using bioengineered yeast, gelatin, and Martian dirt. The mixture hardens in the cold, dry Martian atmosphere to form a foamy material with compressive strength of about 12 MPa, similar to low-grade concrete, while using far less energy than heating regolith.