Bloomberg is a nut case for sure, and I don’t think mythical climate change has anything to do with it, but protecting the NYC subway system including lower Manhattan around the Battery and Wall Street from flooding and storms like Sandy is probably not a bad idea.
Back when Katrina hit New Orleans, there was much criticism of the inaction of the city and state governments in not adequately preparing for the hurricane. However, Ray Nagin was a genius compared to Mr. Bloomberg and his minions. For instance, New York has a vast network of highway and railroad tunnels and subway lines. Why were the entrances to these facilities not adequately protected with sandbags? Where were the submersible pumps? Assuming global climate change is true (which I don't believe), coastal cities will be flooded more frequently by hurricanes, or in the case of the Atlantic coast north of Cape Hatteras, by nor’easters. City and state officials acted like God or Obama would somehow wave a magic wand and save them.
Liberalism is a mental disorder.