There is a connection. Global warming is part of the reason. Obviously in the beginning the largest initial problems are going to be for cities that have other

There is a connection. Global warming is part of the reason. Obviously in the beginning the largest initial problems are going to be for cities that have other reasons for sinking in addition to global warming. But global warming is part of the reason and will apply to every single city that is on the ocean coast. Say for example there is a terrible disease outbreak in your community. The first people that die will probably be people that have weakened health because of health problems other than the particular outbreak. But that does not mean that the disease does not exist and the ones that survive should not be trying to address it.