Beakman explains the history behind magnets and the difference between magnets and electromagnets. They then walk through making an electromagnet and demonstrate that the magnetic energy in the nail comes from the battery and isn't inherent in the nail. Beakman explains that the inherent energy separates electromagnets from regular magnets. Beakman then mentions some ways in which electromagnets are used in the world today.
Beakman tells a story about the theory of how Neanderthals invented the wheel and why. They explain that having wheels reduces friction and makes it easier to move things. Beakman demonstrates this using a wagon.
Beakman briefly explains the history of beauty marks and that melanin causes moles and freckles. Phoebe acts like Cleopatra and illustrate how she used emulsion to create skin creams. Beakman then goes on to describe emulsions.