I strongly recommend reading this piece. I have little faith in geology but I like the idea of using history to predict the future. This former NASA scientist claims that in just a few years sea level could rise by 25 meters. Think about that...
The coastal population centers of the US would be removed from existance. San Fransisco, Los Angeles, New York, Miami, Boston... All gone. The death toll could be in the hundereds of millions.
What could be better?