Homer evolves from a single-celled organism into a modern-day human. A great depiction of evolution.

Although science has not fully explained the origins of life, this clip describes how basic chemistry gave rise to living organisms.

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

To illustrate why excessive use of antibiotics is a problem, a scientist performs an experiment. He drops bacteria into a solution containing a potent, broad-spectrum antibiotic, and they survive.

In this clip, Charlie suggests using an evolutionary algorithm to search for abnormal behavior after a murder occurs in a video game with a real-life component. Evolutionary algorithms imitate the biological process of natural selection to find optimal solutions.