A most excellent contribution. Make beer in the amount of sea level rise! Forward!
So the sea levels rise. What is the worst that can happen. We are not talking tsunamis here, it is 7 inches in a century (Although I HAVE had problems with 7 inches overnight, but, ahem, I digress). People move to higher ground, and a bunch of slum-ridden coastal cities share the same fate as Atlantis. It might even have a cleansing affect. So Harrisburg becomes a major port, so what?