This report warns that the future of the Tri-State Region is intertwined with that of the Northeast Megaregion, the string of metropolitan areas stretching from Boston to Washington. That future is threatened by lagging job growth, rising housing costs, increasing air and road congestion, and threats to our environment and quality of life. The report recommends governing alliances to address mobility, carbon emissions, sprawl and environmental protection. With the proper investments and concerted action, the Northeast Megaregion can turn its incredible concentration of people, skills and transportation infrastructure into a strategic advantage in an era of climate change and oil uncertainty.