Unusual, interesting, lively and intelligent. It's an honour to be a member of the Rationalist Association. RA member Philip Pullman
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John Gribbin is one of the world's leading science writers and the author of more than 90 books. His latest book, The Reason Why: The Miracle of Life on Earth, was published by Allen Lane in April 2011. You can find out more about John's writing on his personal website.