Neil deGrasse Tyson explains radioactive decay. He explains how we can determine the age of a rock using meteorites and illustrates that atoms undergo nuclear transmutations over time until they become stable elements.

Amsterdam Vallon tries to elevate the status of the Irish people in New York by having them win the election for mayor. He finds a suitable Irish candidate, and the candidates make passionate speeches to rally support for their causes.

Olivia discusses the story behind the physicists who invented a new type of microscope that could look at a single atom in sheet metal.

Venus gives Arnold a 2-minute lesson on the atom. He makes allusions to inner city life (gangs, the neighborhood, etc.) to explain the different parts of the atom in a highly relatable manner.

This clip describes the Miller-Urey experiment and its purpose: to determine if complex molecules could arise from simple natural chemical reactions.