Hari Sreenivasan:

But, first, let's go back to New York for a different story.

This week marks five years since Superstorm Sandy. It flooded coastline communities and led to tens of billions of dollars of damage.

In New York, there are many plans on how to prepare for and withstand the worst of another disaster, but turning those ideas into reality remains a huge challenge.

It's the focus of our Leading Edge segment tonight.

Miles O'Brien has our report, starting off in Queens.