Ray Bradbury's short story A Sound of Thunder introduced us to the expression The Butterfly Effect and the concept of chaos theory (plus it's got DINOSAURS!), and has twice been adapted for the screen (because it's got DINOSAURS!). But did one version stick too closely to the original text, and the other deviate too much? 

A Sound of Thunder

The 2005 film

This episode presented by:
J.R. Southall
With:
Iain Martin

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