About the fill: Stanford’s engineering department did a quick study some years ago to estimate how much sand, gravel and cement will be needed to build sea walls for predicted sea level rise. Just for world ports–not for cities–the amounts were staggering. There is not enough construction capacity in the mideast or south asia to armor the ports of the gulf and southeast asia. This article doesn’t go into it, but the engineers told me that there may not be enough gravel and sand in that region to protect the ports–let along urban areas. http://news.stanford.edu/news/2011/may/seaports-climate-change-051611.html
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