The Thought-Feeders is a science fiction novella by R. R. Winterbotham, first published in 1941. The story follows aviators Dr. Kempster Duerkes and Captain Lewis Hawes, who become trapped in a greenish cloud during a high-altitude flight. In this realm, they encounter beings known as the Green Clouds, which sustain themselves by consuming thoughts. The narrative explores themes of consciousness, evolution, and the power of imagination as the protagonists navigate this surreal environment and seek a way back to Earth.
