So low lying, densely populated areas are going to get wiped off the map by 2050, just 30 years from now. Projections show Mumbai being underwater at high tide, as well as Bangladesh, and the entire south coast of Vietnam. Not to mention all the little island nations in the Indian and Pacific oceans. The last 30 years have seen massive migrations of people into those cities like Mumbai, and now they'll have to flee back.
This has refugee crisis written all over it and there will be wars fought over access to clean water. Happy days ahead, eh?