(1)According to a recent study by the U.S. Geological Survey
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(2)New York City sinks 1 to 2 mm below sea level every year
(3)The main reason is too many high-rise buildings
(4)Wall Street Financial District, a cluster of skyscrapers
(5)Lower Manhattan says subsidence is twice as fast. Queens and Brooklyn are also sinking
(6)The total weight of a million high-rise buildings is estimated to be
(7)About 770 million tons
(8)How much is this weight
(9)70,000 Eiffel Towers
(10)equivalent to the weight of 140 million elephants
(11)The ASTATE BUILDING including M.P
(12)New York’s main skyscraper was built on solid rock
(13)Some buildings are built on sand and clay mixed ground to speed up subsidence
(14)It’s said that it’s on
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