The Engines of Our Ingenuity turns 25 this year. Engines is a radio program that tells the story of how our culture is formed by human creativity. Written and hosted by John Lienhard and other contributors, it is heard nationally on Public Radio and produced by KUHF-FM Houston. Among other features, this website houses the transcripts for every episode heard since the show’s inception in 1988. There are also lots of extras, such as audio files, episodes in Spanish, and related talks and papers.