Removing blog posts from Latest Happenings

We have a situation. Ours is a quizzers' social network, and we use blogs for quizzing, with  the bulk of contents nearly confined to quizzes (unless someone uses The Wire).

The result is that the top left column (Latets Happenings) looks a repeat of the top right colum (Latest Blog Posts). This is really an eye sore. So, is there anyway to Latest Blog Posts from Latets Happenings?