Yale Environment 360: A dike, the green strip along the coast, protects flower fields and wind turbines in the northern Netherlands. This promenade in the HafenCity district of Hamburg is designed to withstand flooding. An elevated roadway passes behind it. Hamburg's HafenCity is partially protected against storm surges and rising seas. The area encompasses the islands in the right two-thirds of photo. The Maeslant Barrier in the Netherlands. When waters reach 10 feet above normal sea level, the massive gates are closed...