The rise of sea level, a consequence of global warming, will devastate the economy of most countries with sea coasts. Estimates of the rate and extent in the rise of sea level, by thermal water expansion and by melt water from glaciers in Greenland and Antarctica, differ among scientists. The Intergovernmental Panel on Climate Change (IPCC) (February 2007) [1] foresees sea-level rise of 0.2–0.6 m by 2100, assuming no rapid melting of glaciers. A major melting in Greenland and West Antarctica will add 7 m to the level of the sea. There are worrisome signs that the process has begun. The eventual disintegration of the West Antarctic ice sheet will add another 7 m to sea level.