Is there a way to display news from multiple topics/categories in a page?

I have a hierarchy set up in my categories. Like this:

Parent Category
=Child1 Category
==Grandchild1_1 Category
==Grandchild1_2 Category
=Child2 Category
==Grandchild2_1 Category
etc...

I would like to be able to generate a single page that shows all articles for Grandchild1_1 Category, Child1 Category, and Parent Category.

Right now, the URL for a specific topic/category is:

http://www.mysite.com/modules/news/index.php?storytopic=2

Can I specify multiple storytopics somehow?

If this can't be done, is there a better way to set up categories that will let me do something like this?

^Bump

Does anyone know how I can do this?

Hi
Your URL link doesn't work - but in the meantime look into the spotlightmodule. by That I also mean do a bit of research and check it out then decide if it helps solve your problem.

Perhaps you can also look at your block selections and settings - check the docs link below for the user manuals.

Cheers