Published: Nov 25, 2012 12:54 PM EST
Updated: Nov 26, 2012 7:30 AM EST

If you think Sandy was just a 100-year storm, imagine one just as bad - or worse - every three years.

New Yorkers are going to face tough decisions in the coming years to keep powerful storm surges out of Manhattan and other boroughs.

The Associated Press interviewed prominent thinkers and builders who said now is the time to think big to shield the city's core.

Some examples include:

- A 5-mile barrier blocking the entryway to New York Harbor.

- An archipelago of man-made islets guarding the tip of Manhattan.

- And, a 1,700-foot barrier at the mouth of the Arthur Kill waterway between the borough of Staten Island and New Jersey.

The chief question is whether sufficient political will exists to get any of the gigantic projects built.