David appears regularly on NPR and BBC to discuss science.  Listen to some recent appearances here:

• Michio Kaku’s Science Fantastic – upcoming
• Suspended In Air: Italo Calvino, BBC Radio 3, Sunday Feature, June 3, 2012 Podcast
• World Service, BBC Radio 4, May 26, 2012
• BBC Radio 5, Richard Bacon, May 24, 2012: Podcast
• Night Waves, BBC Radio 3, May 24, 2012: Podcast
• David Sirota Show, AM760 - Colorado, September 30, 2011: Podcast
• Day 6, hosted by Brent Bambury, CBC, September 23, 2011: Podcast
• Big Picture Science, SETI Institute Radio - August 29, 2011: Podcast
• Shrink Rap Radio, August 12, 2011: Podcast
• Brain Science Podcast, hosted by Dr. Ginger Campbell, July 11, 2011: Podcast
• The Conversation, hosted by Ross Reynolds, KUOW, June 28, 2011: Podcast
• The Leonard Lopate Show, WNYC, June 6, 2011: Podcast
• The Forum, Apr 23, 2011: Podcast
• Science Weekly, Apr 10, 2011: Podcast
• Start of the Week, Apr 4, 2011: Podcast
• Nature Podcast, April 2011: Podcast
• Fresh Air, hosted by Terry Gross, National Public Radio, May 31, 2011: Podcast
• Radiolab, hosted by Jab Abumrad and Robert Krulwich, National Public Radio, March 8, 2011: Podcast
• Radiolab, hosted by Jab Abumrad and Robert Krulwich, National Public Radio, September 20, 2010: Podcast
  
• Radiolab, hosted by Jab Abumrad and Robert Krulwich, National Public Radio, July 27, 2009: Podcast
• BBC World Service, June 24, 2010: Podcast
• All in the Mind, hosted by Natasha Mitchell, Australian Broadcasting Corportaion, 20 June 2009: Podcast
• The Interview, BBC World Service, 12 June, 2009: Podcast
• Late Night Live with Philip Adams, Australian Broadcasting Corporation, June 4, 2009: Podcast
• All Things Considered, Robert Krulwich, National Public Radio, May 18, 2009: Podcast
• Front Row, BBC Radio 4, April 24, 2009: Podcast
• On Point with Tom Ashbrook, National Public Radio: Podcast
• Talk of the Nation, National Public Radio, Feb 17, 2009: Podcast
• All in the Mind, BBC Radio 4, July 22, 2008: Podcast