To the humans of the future if you're capable of engineering I suggest to create to begin with 7 metropolises around the planet. Creating the first of hubs existing and unaffecting nature while self-sustaining Humanity and to move masses of people about  Since we're at it might as well design them smartly so that the education RnD production distribution all is in one Grade Center. Maybe put some parks and farmland and mills in between the commercial to the residential offering Grand Apartments to accommodate lets say half a billion people. And it one Fell Swoop we save half of humanity from natural disasters if we engineer these properties smartly. Of course these things can't be fragile they must be capable of enduring the worst we could imagine after all we are protecting our children and the dozens of smaller metropolis scattered around the continent to house everyone. I would hope that we would be capable of replicating at least something that endures such as the Great Pyramids but adaptable to changes in time and space.   we must give our species a purpose and I could thinkbof nothing better then building for a future if we are to have one.