planet and in the not too distant future 8 major cities could be underwater bangkok lagos manila shanghai london houstonand the one sinking at the fastest rate jakarta parts of the indonesian capital have already dropped 4 meters the reason why using sea levels for one but that's not the only culprit local residents are steadily depleting the ground water supply below the city that basically creates an air pocket into which the earth above it sinks attempts to curtail this development have proven difficult because almost half of g. cartons rely on groundwater for their day to day needs. our reporter michelle that still went to jakarta to find out more. it's been a while since anyone prayed in this mosque. at the scene has long since claimed to it. it makes little time pulling gun set every time he sees the building. thinking this city is increasing. in last few years and if. you can be begun people say their prayers here before they cannot do it. anymore. the indonesian capital of jakarta is home to over 30000000 people it's one of the most densely populated cities in the world and it tests a problem. t