Kwame is appalled at how the small town villagers who have had trash dumped on them by Sly Sludge's operations have started polluting their own town. It demonstrates cowardice, lack of vision, and apathy of the townspeople.
The Planeteers show what can happen to the environment if we continue to produce a lot of trash and waste without thinking about the long term effects of it. They show what happens if people don't follow the Three R's or don't put in a concerted effort to reduce trash.
Professor Actual Factual tells Brother and Sister a little about the environment within Bear Country, including the problem of the increasing size of the landfills. He expresses the importance of taking care of the environment through a couple of ways.