How Will New York Keep Out a Rising Sea?

During superstorm Sandy, a swollen New York Bay overflowed into Manhattan, flooding subways, tunnels, and a major power substation. But what if the storm surge had been stopped by a five-mile-long barrier outside the harbor? Or what might have happened if New York had built marshes and oyster beds at the tip of Manhattan that had absorbed some of a storm surge's energy? In the wake of New York's worst natural disaster in modern times, city and state officials are beginning to consider...Full Story