When it comes to addressing the effects of sea level rise that is expected to occur over the course of this century, there are many ways to immerse yourself in the subject. You might do some reading and make some field trips, talk to knowledgeable people, attend some seminars, and write some research papers. Or you might take an entire year to slowly traverse the landscape in question, and get a feel for it through a lot of direct observation, which is what I did. I spent about a year sailing around the Eastern Seaboard of North America, from the submerged coastal mountain range that is the coast of Maine north of Portland to the shifting sand dunes of St. Augustine in Florida, and most points in between, looking at both nature and historic sites along the way.

There certainly is nature to be found further inland, but rather few historic sites. It is very important to understand that, unlike the ancient and compact settlement patterns of Europe, and unlike its dense and active network of navigable rivers and canals, North America consists of a rather narrow but thickly settled coastal zone known as the Northeast Corridor, and the vast expanse of Wild West. Historically, the colonies survived through ocean trade. Until the advent of coal-fired railroads, the only parts of the interior that were economically viable were the ones that were within easy reach of a navigable waterway. Even then many inland settlers found grain to be too bulky for trade, and used it to make whiskey. The Erie Canal made Chicago a town rather than just a portage between the Great Lakes and the Mississippi River. The reason was simple: before the advent of railroads, it cost as much to transport cargo 30 or so miles overland as it did to ship it across the ocean. Until a railroad was built across Massachusetts, goods shipped from Chicago to Boston via the Erie Canal had to be loaded onto barges and floated down the Hudson River to New York, then transferred to schooners that took them up the coast.

It is also very important to understand that global trade is not, as one unfortunately often hears, only possible thanks to fossil fuels. Until the 1920s much of the shipping in Boston Harbour was by sail. Most of the ships were relatively small, with vast numbers of schooners of around 60 feet and crews of 10 or fewer. The age of container ships, bulk carriers, roll-on roll-offs (ROROs), and other monstrous oil-thirsty craft is quite recent, while the history of global trade is ancient, and proceeded in one of two ways: on foot (leading caravans of pack animals) or by sail. It is also important to note that coal never became competitive with sail in transporting bulk goods, and sail-based shipping persisted until the age of the marine diesel engine, which burns bunker fuel (a slightly upgraded crude oil). This substance will most likely no longer be available in the vast quantities required just a few decades from now, and certainly well before the end of the century. It seems plausible to think that the age of fossil fuels will end as it started, with oil giving way to coal, giving way to wind.