Economic Times: The low-lying Marshall Islands , a Pacific atoll chain that rises barely a metre above sea level, has announced plans for a wall to hold back rising sea levels. “We want to prevent erosion and stop flooding,” UN ambassador Phillip Muller said at the weekend, launching an appeal for USD 20 million in international donor funds to get the project under way. The full cost of the protective sea wall has not been released and Muller said the initial plea for donor funds is for detailed engineering…