According to a new research study published on Tuesday October 29, rising sea levels could affect some of the major cities of the world by 2050. 


Simply put, rising sea levels will be a threat for more number of people worldwide, than previously expected.

Source: NBC

By developing an accurate way of calculating land elevation, the authors of the study estimated the effect of sea level rise over large areas. 


The results indicated that the previous number was far-fetched and way too optimistic. According to the research, some 150 million people are living on land that'll be below the high-tide line by 2050. 

Source: DNA India

Starting in South Asia, Vietnam could all but disappear. More than 20 million people or one-quarter of their population lives on land that will be below the sea. 


Much of Ho Chi Minh City would disappear alongside. 

Source: NY Times

Moving to the west, 10% of Thailand's population currently lives on land that is likely to be inundated by 2050. This is 10 times more than what was indicated by the previous technique.


Thailand's political and commercial capital, Bangkok, is also expected to suffer the wrath of seas. 

Source: NY Times

Closer to the Arabian Sea, Mumbai, India's financial capital, is at risk of being wiped out. Built on what was once a series of islands, Mumbai city's core is particularly vulnerable. 

Source: NY Times

If the submerging of cities wasn't quite enough, migration caused by rising seas could trigger regional conflicts and force farmers to search for jobs away from their lands in urban cities. 

Source: Euro News

Elsewhere, disappearance of cultural heritage can be accelerated due to the rising sea levels. Alexandria, Egypt, founded by Alexander the Great, could be lost to rising waters. 


Basra, Iraq's second-largest city could also be totally submerged by 2050. 

Source: NY Times

John Castellaw, a retired Marine Corps lieutenant general, explained how the problem is beyond the realms of environment and affects more than what we had imagined. 


He said:  

So this is far more than an environmental problem. It’s a humanitarian, security and possibly military problem too.
Source: Ocean Service

The projections in the the research, which was produced by Climate Central - a science organization based in New Jersey - don’t account for future population growth or land lost to coastal erosion.