2 ms·
Humans have deposited a lot of iron and other useful elements on the surface for the next civilization to start with though.
by kryptiskt 6y ago
Humans have deposited a lot of iron and other useful elements on the surface for the next civilization to start with though.
- ethbr0 6y agoIt's less of an issue with recraftable materials (like iron) and moreso with one-way ones (like petroleum, fissionable uranium isotopes, helium, or some plastics). Of those, it feels like the only irreconcilable one is scale: e.g. something you need so much of, repeatedly, that no less-efficient substitute is viable. And of those, geologically-created, carbon-based energy sources (coal, oil) are the primaries that come to mind. (Also, nitrogen, but I imagine the Haber–Bosch process would survive)