Dolphins have long been recognised as one of the most intelligent mammals on the planet. In tonight's science programme, Howard Stableford travels to Walt Disney World, Florida, to investigate the latest attempt - made via a giant keyboard - to communicate with them. And Shahnaz Pakravan reports from Toulouse on how the French are furthering Russian plans to explore the Mars planet surface with a robot Rover vehicle that can act independently of Earth control.
With Carol Vorderman, Vivienne Parry and Monty Don.
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