The Magic School Bus Rides Again Season 2 Episode 11 Waste Not, Want Not Episode Title:Waste Not, Want Not.Episode Description:Dorothy Ann is preparing a musical about flowers but the orchids she has been growing for it are withering. When they try to find fertilizer to enrich the soil, the other students are dismayed to learn that it comes from feces. They overcome their aversion as Ms. Frizzle teaches them about the nutrient cycle. When it is time to perform, Arnold works these concepts into a cover of Sir Elton John's "Circle of Life".