Originally Posted by
cubby
Steel is definitely a limited resource, in the sense that someday we might run out of it - especially if the world all of a sudden embarks on massive city-saving projects when the oceans rise up.
However, concrete is almost unlimited, because it's so easy to make. I get what you're saying, however, that we need to start thinking about this stuff now.
But we won't - because humanity in it's current political iteration, doesn't think 3 inches past it's nose. So it's only after the oceans rise, and the coastal cities drown, that we as a species will finally have to rise up and take account for what we've done, and especially what we'll need to do.
As far as large projects go, if it's necessary, the world can rally behind anything and accomplish almost everything. When the time is right, we will prevail.