There are three methods for viewing recents forum topics:
On the right side vertical navigation, there is a module entitled, “Recent Forum Topics”. It shows the five most recent active topics.
In the module you’ll notice a sixth items entitled, “MORE...”. By clicking on ‘More’ you will be taken to a separate screen. On this screen you’ll have many options for viewing most recent forum topics.
*Tip: Bookmark the 'MORE' page or use the RSS link in the lower right corner