you forgot to mention cleaning up all of the plastic and other poisons, also it would be nice to preserve some of the aquafiers. Oh, and also the dirt (at curre

you forgot to mention cleaning up all of the plastic and other poisons, also it would be nice to preserve some of the aquafiers. Oh, and also the dirt (at current erosion rates, the US runs out of dirt at the end of the century). I'm probably forgetting a few things myself.