A little snippet from my story idea, for some context-
"The Earth Government Collapses, caused by the cutoff of resources from the Colonies. Large-Scale war soon erupts, with Nuclear Weapons being used against most of the nations on Earth. The Now-Independent Colonies intervene, but end up declaring war on eachother, most of the colonies and cities ending up being destroyed, save for the Capitals, which have extremely strong Magi-Tech shields. High-End WMDs are used on eachother, burning away entire surfaces of planets, causing mega-earthquakes, mass volcanic eruptions, boiling away oceans. Due to the detonations of these weapons, the surface of the planets were damaged, to no end. Entire crusts of planets, melted, or blown away entirely. The surfaces of these planets were doused in radiation, as well, which eliminated any traces of life that had been remaining(outside of the Capitals)"
The Humans, during the war, were stuck in the Capitals, for hundreds-of-thousands, if not millions, of years, as the war raged, the planet(s) changed, and the atmosphere turned flaming. Assuming an entirely self-sufficient Capital, being,
- Constant Air Production, Circulation, Maintenance
- Constant Water Supply, Circulation, Treatment
- Constant Food Production, Supply
- Artificial Gravity, at a level of 0.98g
- Constant Production of Items, Necessary and Unnecessary
- Constant Energy Supply
- Unbreaking Shield
How might Humans adapt, or evolve, to these conditions, while not being able to exit the Capital Domes?