In this video, AC Grayling introduces Exchanges at the Frontier, a series of events in autumn 2009 in which Wellcome Collection joined forces with the BBC World Service to host some of the biggest names in world science. Grayling, Professor of Philosophy at Birkbeck College, University of London, discussed the social impacts of their discoveries and the frontiers of scientific knowledge. Each event was also recorded and broadcast on the BBC World Service.

Read the transcript [PDF, 64KB]

Watch video interviews with the participants, below. You can also listen to the Exchanges at the Frontier broadcasts on the BBC's World Service website.

• 

  Patricia Churchland

  Professor Patricia Churchland is a neurophilosopher based at the University of California, San Diego, whose research explores the impact of neuroscience on our understanding of human nature and morality.

• 

  Lawrence Krauss

  Professor Lawrence Krauss is Director of the Origins Initiative at Arizona State University, an internationally renowned theoretical physicist and author of bestselling books including 'The Physics of Star Trek'.

• 

  Rajendra Pachauri

  Rajendra Pachauri is the Chair of the Intergovernmental Panel on Climate Change.

• 

  Seth Shostak

  Seth Shostak is Senior Astronomer at the SETI Institute in California, which searches for evidence of extraterrestrial intelligence.

• 

  Tejinder Virdee

  Tejinder Virdee is a physicist at Imperial College London and at CERN in Geneva, where he works on the Large Hadron Collider project.