Faraday's law suggests that lightning involves air conducting current within Earth's magnetic field, potentially causing motion in the air. The discussion highlights that the ionization of air particles is crucial for the formation of lightning bolts. It also notes that the violent movement of air during a lightning strike can be harnessed in practical applications, such as a magnetoaerodynamic engine. The relationship between Earth's magnetic field and lightning remains debated, with some questioning its direct influence. Overall, the conversation emphasizes the complex interactions between electricity, magnetism, and atmospheric phenomena.