Comment by agsnu
Comment by agsnu 20 hours ago
A significant portion of human structures are located close to the coast (seaborne trade having been a huge enabler of economic development for a few hundred years) and are exposed to flooding from rising sea levels, or built in valleys that are increasingly at risk from flooding due to far-above-long-term-historic-norms precipitation runoff (higher atmospheric temps lead to more energy in weather systems; see eg massive floods in Europe in the past few years).
Compared to the other challenges climate change poses those are fairly simple engineering problems. The Netherlands manage fine with large parts of the country below sea level.