Bloggingheads.tv Science Saturdays: John Horgan and George Johnson

This week's Science Saturday is all about sci fi: John Horgan explores the connections between Battlestar Galactica and Terminator Salvation, George Johnson examines the science and the theology of Angels & Demons, and John and George discuss the nonsense of time travel in some popular science fiction. They also talk about a bit of science non-fiction: the prospects for nuclear fusion power and the recent news about RNA and the origin of life.

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