Quote Originally Posted by sktarq View Post
um a few minor points.
Fusion works as a power source-can get the hydrogen from electrolysis and have plenty left over to power the city. Fission need rare metals (uranium or thorium mostly) which sorry to say are not found in sea water in the concentrated high enough to matter, unless you are at some fumerole at which point geothermal is easier anyway.
Yes they are. Using currently demonstrated tech, the total cost of fission power from seaborne uranium is, at most, 50% greater than using surface-mined uranium. Combine it with a fast breeder reactor and it's basically the same price.