A Sound of Thunder by Ray Bradbury"A Sound of Thunder" is a classic science fiction short story by Ray Bradbury that explores the concept of time travel and its potential consequences. The story follows Eckels, a wealthy man who pays to join a safari that travels 65 million years into the past to hunt dinosaurs. The story concludes with the implication that Eckels' small action in the past has had far-reaching and unpredictable effects on the future, illustrating the "butterfly effect" in chaos theory.