"Tree Mail": There are many types of pollution and each one has a solution to help prevent it. Rae Rae visits his friends at the Abilene Recycling Center in Abilene, Texas to learn what they are doing to prevent as much land pollution as possible. "Enviro-Do-And Show" Project: Enviro-tester: In this episode Rae Rae shows the kids at home how they can build a remote location air quality measuring device. "Critter Connection": Lonny, Red, Big Guy, and Gaga the Black Handed Spider Monkey.