It’s happened before and it may happen again: A century from now, visitors to coastal cities like Boston and New York could be valet parking their boats.

In National Geographic News, Christine Dell’Amore reports that “major cities in the northeastern US and eastern Canada are directly in the path of the greatest rise in sea level if Greenland continues to melt due to global warming.” In fact, if global warming continues, ocean levels around New York City will rise by twice as much as in other parts of the United States.
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The only question is?when? – Global warming is expected to cause the sea level along the northeastern US coast to rise almost twice as fast as global sea levels during this century, putting New York City at greater risk for damage from hurricanes and winter storm surge. Much of the city is less than 16 feet above the mean sea level, with some parts of lower Manhattan only about 5 feet above the mean sea level, so a rise of 8.3 inches in addition to the global mean rise would pose a threat to this region, especially if a hurricane or winter storm surge occurs.
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