This episode of "Stuff You Should Know" explores the nature of electricity, tracing its understanding from ancient Greece to modern applications. The hosts discuss the historical figures who shaped our knowledge of electricity (Thales, Gilbert, Franklin, Faraday, Coulomb, Thompson), explaining concepts like static vs. current electricity, electron flow, and the relationship between magnetism and electricity. They detail how generators convert mechanical energy into electrical energy, using turbines and magnets, and how transformers adjust voltage for safe home use. Finally, they explain the function of circuits, loads, and grounding wires, illustrating how electricity powers everyday appliances.