 Professor Geoff Marcy, who's from the University of Berkley, November 2007
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 Case Rijsdijk November 2007
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 Kevin Fong November 2007
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 Brian Schmidt November 2007
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 Chris Vallance November 2007
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 Mark Peplow, Chemistry World November 2007
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 Giles Cardozo, Bear Grylls, Michael Vore November 2007
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 Professor Chris Turney, University of Exeter November 2007
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 Dr Anne Skinner, Williams College, Massachusetts November 2007
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 Dr Jenny Collier, Imperial College London November 2007
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 David Price, Science Made Simple; Johnny Ball October 2007
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 Professor Claudio Stern, University College London October 2007
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 Professor Roger Pedersen, Cambridge University October 2007
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 Professor Ian Wilmut, University of Edinburgh. October 2007
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 Dr Tim Upson, Cambridge Botanic Gardens October 2007
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 Richard Walker & Sanjeet Dhesi, Diamond Synchrotron; Tim Wess, Cardiff University October 2007
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 Dr Ben Allanach, Cambridge University October 2007
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 Dr Cristina Lazzeroni, Birmingham University October 2007
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 Professor Rami Abboud, Ninewells Hospital and Medical School at the University of Dundee October 2007
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