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NYC Could See Bad Flooding Every Five Years, Study Says

Water rushes into the Carey Tunnel (previously the Brooklyn Battery Tunnel), caused by Hurricane Sandy, October 29, 2012, in the Financial District of New York.

Water rushes into the Carey Tunnel (previously the Brooklyn Battery Tunnel), caused by Hurricane Sandy, October 29, 2012, in the Financial District of New York.

Photographer: Andrew Burton/Getty Images
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New York (AP) -- Within the next three decades, floods that used to strike the New York City area only once every 500 years could occur every five years, according to a new scientific study released just days before the fifth anniversary of Superstorm Sandy.

The study, performed by researchers at several universities and published Monday in the Proceedings of the National Academy of Sciences, primarily blames the predicted change on sea-level rise caused by global warming.