Boston Globe: THERES A DARK JOKE in the city planning community that refers to an exhibit at the Boston Public Library. Near the Boylston Street entrance, a floor map titled Boston Over Time shows how the city has grown since 1630. Much of that growth, including the Seaport District, the Back Bay, and the land the airport is on, is reclaimed wetlands and marshes? or plain old landfill. As the joke goes, the map also shows the future, because with climate change, the sea is going to take it all back. While...