We turn now to the second of two stories about the growth of offshore wind farms and the questions surrounding their impact.

Science correspondent Miles O'Brien takes us to New Bedford, Massachusetts, where local officials are trying to find a balance between greener renewable energy and the potential impact on the critical fishing industry in that region.

In the early 19th century, New Bedford, Massachusetts was one of the wealthiest cities in the country

because of a grim industry. It was the whaling capital of the world. The oil produced from the carcasses lit the eastern seaboard before the transition to fossil fuels.

The city, ironically, is on the cusp of being a center of energy once again.

This time, the resource is blowing in the wind.

The tall pylons at the Marine Commerce Terminal are the most conspicuous features in an involving

harbor, an economic transition spurred by the energy transition.

There are cranes everywhere.

You're really remaking this port, aren't you? Yeah, we really are.

This is pretty significant.

Mayor John Mitchell took me on a cruise around the harbor.

You got construction all up and down this harbor.

So what's the total dollar amount right now?

It's about a billion one.

Would that have happened without wind?

A lot of it wouldn't.

In fact, most of it would not.

What we're doing is playing to our advantages.

That's what you see here.

The mayor is on a political tightrope.

The wind industry that he's been courting for a dozen years

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