Recycled Human Waste Could Enable Crop Growth on Moon and Mars
Researchers have demonstrated that treated human waste can extract essential nutrients from lunar and Martian soil simulants, potentially supporting future extraterrestrial agriculture.
Scientists at Texas A&M University, in collaboration with NASA, have developed a method to transform barren lunar and Martian regolith into fertile soil using recycled human waste. Their study involved treating simulated extraterrestrial soils with effluent from bioregenerative life support systems (BLiSS), which are designed to recycle organic waste into nutrient-rich solutions. The interaction between the BLiSS effluent and the regolith simulants released essential plant nutrients such as sulfur, calcium, and magnesium. Microscopic analysis revealed that the treatment weathered the mineral particles, creating a more hospitable environment for plant roots. Lead researcher Harrison Coker stated, "In lunar and Martian outposts, organic wastes will be key to generating healthy, productive soils." While these initial results are promising, further testing with actual lunar and Martian regolith is necessary to confirm the feasibility of this approach for sustaining human colonies in space.