If our shared actions fail to moderate the global climate crisis and rise in sea levels rise threaten to inundate our cities, then we have no choice but to take all the options.

Modify our behavior -modify our cities. (Convert those pink pedestrian crosswalks into ponto vecchios?)

Mitigate the damage where we have the resources to raise the buildings and the street levels.

And migrate people and business where we cannot hold back the water.