But this is not the place to deal with such complex issues.

Watch for more on these complex issues in the new year.

Why should people have a 'view' on a complex scientific issue?

In environmental health research, the focus has moved from relatively simple to more complex issues.

But sometimes larger and more complex issues come into play.

It was a more complex issue than one book would suggest.

But there is also a chance to consider more complex issues, based on real events.

I would like to say that this is a complex issue.

The work was done over months - it is a very complex issue.

"These are very complex issues and there is no easy answer."