In a significant step towards establishing a human presence on Mars, Harvard University researchers have demonstrated the feasibility of using bioplastics and algae to create sustainable habitats. This innovative approach aims to address the challenges of transporting materials from Earth by utilizing self-sustaining, closed-loop systems.
Led by Professor Robin Wordsworth, the team published their findings in *Science Advances*, showcasing how green algae can thrive within bioplastic structures under simulated Martian conditions. They 3D-printed a growth chamber using polylactic acid (PLA), a biodegradable bioplastic, and filled it with *Dunaliella tertiolecta* algae. The algae flourished, producing more bioplastic material.
This research suggests that bioplastic-enclosed algae could form the foundation of self-replicating habitats, reducing the need for material transport from Earth. Integrating bioplastics with other materials could create more robust and livable environments on Mars. The principles also have potential benefits for sustainability on Earth.
Researchers plan to test these habitats under vacuum conditions to simulate lunar or deep-space environments. The goal is to develop a fully functional, closed-loop system, which would be a significant step toward sustainable human presence beyond Earth. The innovative use of bioplastics and algae presents a promising avenue for constructing sustainable habitats on Mars.