Glad you're taking a listen to this - I recommend it to all the students who come my way.  You can skip the last episode, but the rest is superb.

Here is the link for anyone else - http://www.wnycstudios.org/podcasts/radiolab/projects/radiolab-presents-g

On the above site - they list the episodes in reverse order of airing - last episode is first.  So - to listen correctly - start with the Miseducation of Larry P.