Beakman acts as Einstein to explain the theory of relativity. He breaks down each component and explains what it is. He also explains relativity using an animated clip of cars on the highway.
Einstein is disappointed in himself, so the Warners sing the ACME song to cheer him up. In the process, they help him develop the mass-energy equivalence formula, E = mc2.
Hank provides background information on the biologist who contributed to evolutionary history: Charles Darwin. He also explains the four principles of Darwin's idea of natural selection, which are variation, heritability, struggle for existence, and survival and reproduction rates.
Key Words: Genetic Drift, Fitness, Variations of Phenotype, Heritable, The Struggle for Existence, Survival and Reproduction Rates
Bill Nye narrates the story of how photosynthesis was discovered. He explains the hypothesis of the experiment that shed light on how plants generate energy.