Global sea levels are rising faster and faster. It spells catastrophe for coastal towns and cities

Sea level rise was unexpectedly high last year, according to a recent NASA analysis of satellite data.

More concerning, however, is the longer-term trend. The rate of annual sea level rise has more than doubled over the past 30 years, resulting in the global sea level increasing 4 inches since 1993.

This article and the research it is based on highlights the issues.