Re: Another use of the world's oceans
It has less to do with space, but it does have to do with the future. And maybe the world's oceans could be considered unexplored territory. But anyways, I propose using floating rafts to grow biomass at sea. Petroleum comes from biomass, and growing fresh biomass would give us a superior fuel, ethanol. So that energy crops do not compete with food production I think ocean biomass is a good idea. See the essay entitled "Benthic Energy" at the bottom of my website:
Starship Generations