Test students' ability to design a closed-loop life‑support system for a small crewed Mars habitat. Scope includes integrating air revitalization (quantitative CO2 scrubbing and O2 generation rates per person), water reclamation targets and efficiencies (% recovery), nutrient recycling for hydroponic food production (mass balances and expected yields), an energy budget and power sizing (W and kWh/day), component mass and redundancy planning, and failure‑mode mitigation with quantitative estimates (MTBF, spare mass, recovery time, safe‑hold strategies). Require sample calculations, stated assumptions, trade‑off justification, and a final summary of key metrics (total mass, power, consumables per crew‑member per sol, and predicted system reliability).