They propose building 3D-printed houses on Mars using a mixture of sand, gelatin, and yeast: the cold makes them as resistant as concrete.

Researchers have proposed a new method for constructing shelters on Mars using a mixture of Martian regolith, gelatin, and yeast. This technique involves 3D printing structures that utilize the planet's extreme cold to harden the material into a substance with durability comparable to concrete.

This approach aims to address the logistical challenges of space exploration, specifically the difficulty and high cost of transporting building materials from Earth. By leveraging resources already present on the Martian surface, the proposed method seeks to provide a sustainable solution for housing future missions.