Defending the Last Green Valley
by Dave Rollo
The Northeast Megaregion, also referred to as BosWash, extends from Boston to Washington, DC, and is populated by more than 55 million people. It is the largest contiguous urban area in the United States. BosWash has the largest population of the eleven U.S. megaregions, which together hold over 76 percent of the nation’s population. BosWash has the highest GDP of any megaregion in the world at some $3.75 trillion.