This is a fascinating topic and one that will be with us for years to come.

You learn about someone's life, and also about a fascinating topic.

Now Biofuels is a fascinating topic to be discussing from my perspective.

What other fascinating topic do you know to talk about.

This is a pretty fascinating topic, at least to me.

You know, this is a little bit of a departure for the show, but I think a fascinating topic.

It's a fascinating topic, and I'm really glad you addressed it.

All of us here know, of course, that space is a fascinating topic.

This is a fascinating topic, but as others have pointed out, ten portraits doesn't add up to much.

Corn proved to be a fascinating topic for plant research.