A recent episode of The Engines of Our Ingenuity explores the history of hydroelectric power. Episode 2641 focuses on Niagara Falls and its role in the development of this technology. The episode is also referred to as "Ghosts of Niagara", suggesting a look into the past.

Further details about the episode are available from the source. The title "Ghosts of Niagara" implies that the episode may delve into the lesser-known or forgotten aspects of Niagara Falls' history in relation to hydroelectric power. The episode's content is centered around Niagara Falls, but specific information about the discussion or findings is not provided.

For more information, listeners can refer to the original source.