I struggled with the basic conflict: terraforming some marginally hospitable world? Ok. Rehabilitating this one? Impossible. (Alternatively, building an arcolog

I struggled with the basic conflict: terraforming some marginally hospitable world? Ok. Rehabilitating this one? Impossible. (Alternatively, building an arcology in space? Easy once you can just get stuff up there. Building a few biodomes on earth? Not worth the effort.) I can imagine situations where that might be the case, (unavoidable massive impacts maybe), but blight and lack of crop diversity don't seem solved by moving all the crops through space. (Or if they are, they could be solved by moving them into a biodome on Earth with far less effort / risk.) And it's not like there had to be a choice between science and story. A discussion of super-habitability might have bought some science cred while waving off some of the above.