|New York City sinking four millimetres a year
Scientists say New York City is sinking by up to four millimetres a year under the weight of all its skyscrapers. A team of geophysicists from the United States Geological Survey calculated that there are 1,084,954 buildings in the city, weighing around 764 billion kilograms. This weight does not include fixtures and fittings in buildings, the transport infrastructure, or the weight of the city's 8.5 million inhabitants. Lead researcher Dr Tom Parsons said the gradual subsidence, coupled with rising sea levels, could make New York prone to natural disasters. He warned that "every additional high-rise building could contribute to future flood risk," especially along coastal and riverfront areas.