One of the major consequences of global warming is the rising of the sea level and sea levels are rising even faster than scientists predicted. (1)(2)
This is truly a global problem because a major part of our civilization actually resides in a few meters above the sea level. so any or small amount of sea level rise over time will have great impact on the world economics and human livelihoods
Based on the latest analysis conducted by a joint British-Finnish team, sea levels over the past 2,000 years have been stable. Measurements indicate a rise of only 2 cm in the 18th century and 6 cm in the 19th century, but then a sudden and alarming 19 cm, or over half a foot within this past century. This is most likely due to the melting glacial ice sheets. the average global sea level is forecast to rise between 0.8 meters and 1.5 meters by the end of the century. (3)
A rise of close to 1m would threaten huge areas of low lying coastal land, as well as major cities such as London, New York and Tokyo.
Dr. Ron G. Prinn, Professor of MIT stated that if the northern tundra’s permafrost were to melt away(4),more than 80 times the current annual methane output would be released into the atmosphere, and that a four-degree Celsius rise in world-wide temperatures would mean a five-meter rise in ocean levels. (5)
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One of the major consequences of global warming is the rising of the sea level and sea levels are rising even faster than scientists predicted. 
