An episode of The Engines of Our Ingenuity explores the development of hydroelectric power. The episode, numbered 2641, focuses on Niagara Falls. It discusses the history and significance of this location in the context of hydroelectric power.
Further information about the episode is available from the source. The episode is titled "Ghosts of Niagara", suggesting that it may delve into the lesser-known or overlooked aspects of Niagara Falls' role in hydroelectric power development. Details about the episode's content and the stories it tells are not specified, but the source provides more information about The Engines of Our Ingenuity episode 2641 and its exploration of Niagara Falls and hydroelectric power.