City populations continued to decline while suburbs grew in area, but did not increase proportionately in population. High-tech industry grew in cities such as Corning and Rochester. Overall New York entered the new millennium "in a position of economic strength and optimism". 21st century (2001–present day) In 2001, New York entered a new era following the 9/11 attacks, the worst terrorist attack ever to take place on American soil. Two of the four hijacked passenger jets crashed into the Twin Towers of the World Trade Center, destroying them, and killing almost 3,000 people. One flew into the Pentagon demolishing the walls. The final one was almost taken back over by the passengers aboard and crashed into an open grassland with 296 out of the 500 people dead. Thousands of New Yorkers volunteered their time to search the ruin for survivors and remains in the following weeks. Following the attacks, plans were announced to rebuild the World Trade Center site. 7 World Trade Center became the first World Trade Center skyscraper to be rebuilt in five years after the attacks. One World Trade Center, four more office towers, and a memorial to the casualties of the September 11 attacks are under construction as of 2011. One World Trade Center opened on November 3, 2014. On October 29 and 30, 2012, Hurricane Sandy caused extensive destruction of the state's shorelines, ravaging portions of New York City, Long Island, and southern Westchester with record-high storm surge, with severe flooding and high winds causing power outages for hundreds of thousands of New Yorkers, and leading to gasoline shortages and disruption of mass transit systems. The storm and its profound effects have prompted the discussion of constructing seawalls and other coastal barriers around the shorelines of New York City and Long Island to minimize the risk from another such future event. Such risk is considered highly probable due to global warming and rising sea levels. See also Historical outline of New York History of New York City History of the mid-Atlantic states Notes References Bibliography Broxmeyer, Jeffrey D. Electoral Capitalism: The Party System in New York's Gilded Age. of Pennsylvania Press, 2020) covers city and state. Curran, Robert Emmett, ed. Shaping American Catholicism: Maryland and New York, 1805–1915 (2012) excerpt and text search Dearstyne, Bruce W., The Spirit of New York: Defining Events in the Empire State's History (Albany: Excelsior Editions, 2015). xxiv, 359 pp.