Below is a list of the guests from episodes that were first aired or last repeated in 2013. To listen, click on the episode title to go to that episode’s page.
| Name | Discipline/Profession | Episode Title | Episode Date | Last Aired |
|---|---|---|---|---|
| Chris Amemiya | Biology | Skeptic Check: Monster Mashup | 12/9/2013 | 4/13/2015 |
| Anil Ananthaswamy | Journalism/Technical Writing | Catch a Wave | 3/19/2012 | 9/2/2013 |
| William Anders | Aeronautics/Space | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Ted Anton | Humanities | Long Live Longevity | 7/29/2013 | 12/1/2014 |
| Jeremy Bailenson | Robotics/IA | Ultimate Hook Up | 7/4/2011 | 1/7/2013 |
| Jeremy Bailenson | Robotics/IA | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| R. Tom Baker | Chemistry | Power to the People | 9/30/2013 | 3/23/2015 |
| Jonathan Balcombe | Biology | Happy Daze | 10/17/2011 | 3/4/2013 |
| Alexandre Bayen | Computer Science | Shutting Down Science | 10/28/2013 | 10/28/2013 |
| May Berenbaum | Biology | Invisible Worlds | 9/23/2013 | 4/27/2015 |
| Laurance Bergreen | Author | Exoplanets | 6/17/2013 | 6/17/2013 |
| Bob Berman | Journalism/Technical Writing | Math’s Days Are Numbered | 12/2/2013 | 6/1/2015 |
| Max Bernstein | Aeronautics/Space | Shutting Down Science | 10/28/2013 | 10/28/2013 |
| Lee Billings | Journalism/Technical Writing | Life in Space | 10/7/2013 | 3/22/2015 |
| Jim Blascovich | Psychology | Ultimate Hook Up | 7/4/2011 | 1/7/2013 |
| Bonnie Blodgett | Author | Our Tasteless Show | 3/11/2013 | 4/28/2014 |
| Christoper Boehm | Anthropology | Animal Instinct | 7/9/2012 | 12/30/2013 |
| Greg Borenstein | Humanities | Skeptic Check: About Face | 2/25/2013 | 7/14/2014 |
| Andre Bormanis | Author | Welcome to our Labor-atory | 8/26/2013 | 9/1/2014 |
| Andre Bormanis | Author | Skeptic Check: Follywood Science | 7/30/2012 | 9/9/2013 |
| Nick Bostrom | Futurist | De-Extinction Show | 4/29/2013 | 8/11/2014 |
| Kathryn Bowers | Author | Animal Instinct | 7/9/2012 | 12/30/2013 |
| John Bradshaw | Biology | Time for a Map | 3/18/2013 | 6/30/2014 |
| Jeannette Elizabeth Brown | Chemistry | Material Whirl | 1/30/2012 | 7/8/2013 |
| Susan Cain | Author | Group Think | 4/30/2012 | 12/23/2013 |
| Ken Caldeira | Earth Sciences/Ecology/Climate Change | Whither the Weather? | 9/12/2011 | 1/14/2013 |
| James Cameron | Entertainment | Say La Vie | 2/11/2013 | 5/26/2014 |
| Homaro Cantu | Industry | Our Tasteless Show | 3/11/2013 | 4/28/2014 |
| W. Bernard Carlson | Sociology | Power to the People | 9/30/2013 | 3/23/2015 |
| Nicholas Carr | Author | What the Hack | 11/11/2013 | 6/29/2015 |
| Sean Carroll | Cosmology | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Laura Carstensen | Psychology | Long Live Longevity | 7/29/2013 | 12/1/2014 |
| Melanie Challenger | Author | De-Extinction Show | 4/29/2013 | 8/11/2014 |
| Edward Chamberlin | Humanities | This Land is Island | 6/10/2013 | 11/24/2014 |
| Rob Chandhok | Computer Science | Welcome to our Labor-atory | 8/26/2013 | 9/1/2014 |
| Eric Chien | Industry | What the Hack | 11/11/2013 | 6/29/2015 |
| Howie Choset | Robotics/IA | Stomach This | 5/6/2013 | 5/6/2013 |
| Dan Clery | Journalism/Technical Writing | Exoplanets | 6/17/2013 | 6/17/2013 |
| Gregory Cochran | Physics | Life Back Then | 4/2/2012 | 11/4/2013 |
| Guy Consolmagno | Astronomy | This Land is Island | 6/10/2013 | 11/24/2014 |
| Jonathan Coulton | Music | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Robert Courland | Author | Material Whirl | 1/30/2012 | 7/8/2013 |
| Peter Crane | Biology | Long Live Longevity | 7/29/2013 | 12/1/2014 |
| C. C. Culver | Aeronautics/Space | Getting a Spacelift | 2/6/2012 | 7/15/2013 |
| Katy Culver | Journalism/Technical Writing | Skeptic Check: War of the Worlds | 10/21/2013 | 10/21/2013 |
| Anne Curtis | Physics | Seth’s Wine Cellar | 4/8/2013 | 4/8/2013 |
| Terence Deacon | Anthropology | Emergence | 10/14/2013 | 5/11/2015 |
| Simon DeDeo | Sociology | Emergence | 10/14/2013 | 5/11/2015 |
| Joseph DeSimone | Chemistry | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Laura Dilley | Health/Medicine | Sounds Abound | 8/5/2013 | 11/3/2014 |
| David DiSalvo | Journalism/Technical Writing | Happy Daze | 10/17/2011 | 3/4/2013 |
| Simon Donner | Geography | Anthropocene and Heard | 10/24/2011 | 4/1/2013 |
| Frank Drake | Astronomy | Life in Space | 10/7/2013 | 3/22/2015 |
| Frank Drake | Astronomy | Long Live Longevity | 7/29/2013 | 12/1/2014 |
| Frank Drake | Astronomy | Happy Daze | 10/17/2011 | 3/4/2013 |
| Michael Dunne | Physics | Power to the People | 9/30/2013 | 3/23/2015 |
| Bob Dziak | Earth Sciences/Ecology/Climate Change | Sounds Abound | 8/5/2013 | 11/3/2014 |
| Sylvia Earle | Earth Sciences/Ecology/Climate Change | Group Think | 4/30/2012 | 12/23/2013 |
| Jonathan Eisen | Evolutionary Sciences | Seth’s Wine Cellar | 4/8/2013 | 4/8/2013 |
| David Epstein | Journalism/Technical Writing | You Say You Want an Evolution? | 9/16/2013 | 9/16/2013 |
| David Faigman | Law | Whodunit, Who’ll Do It? | 9/19/2011 | 2/18/2013 |
| Patrick Feaster | History | Sounds Abound | 8/5/2013 | 11/3/2014 |
| Hali Felt | Author | Invisible Worlds | 9/23/2013 | 4/27/2015 |
| Alex Filippenko | Astronomy | That’s Containment! | 2/4/2013 | 4/14/2014 |
| Stuart Firestein | Neuroscience | Skeptic Check: Science Blunders | 1/28/2013 | 11/25/2013 |
| John Fitzpatrick | Biology | Skeptic Check: Monster Mashup | 12/9/2013 | 4/13/2015 |
| Jonathan Fortney | Astronomy | Seth’s Wine Cellar | 4/8/2013 | 4/8/2013 |
| Andrew Fraknoi | Astronomy | Some Like it Cold | 12/16/2013 | 12/16/2013 |
| Ernest Freeberg | History | Welcome to our Labor-atory | 8/26/2013 | 9/1/2014 |
| Edward Frenkel | Mathematics | Math’s Days Are Numbered | 12/2/2013 | 6/1/2015 |
| Helen Amanda Fricker | Earth Sciences/Ecology/Climate Change | Say La Vie | 2/11/2013 | 5/26/2014 |
| Helen Amanda Fricker | Earth Sciences/Ecology/Climate Change | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Jack Gallant | Psychology | ZZZZZs Please | 5/27/2013 | 8/25/2014 |
| Simon Garfield | Author | Time for a Map | 3/18/2013 | 6/30/2014 |
| Gordon Gauchat | Sociology¿÷÷ | Group Think | 4/30/2012 | 12/23/2013 |
| Michael Gershon | Health/Medicine | Stomach This | 5/6/2013 | 5/6/2013 |
| Asif Ghazanfar | Neuroscience | Animal Instinct | 7/9/2012 | 12/30/2013 |
| Robert Gifford | Health/Medicine | Going Viral | 12/12/2011 | 5/13/2013 |
| Edward Glaeser | Economics | Anthropocene and Heard | 10/24/2011 | 4/1/2013 |
| Marc Goodman | Industry | Whodunit, Who’ll Do It? | 9/19/2011 | 2/18/2013 |
| David Goodstein | Physics | Skeptic Check: Science Blunders | 1/28/2013 | 11/25/2013 |
| Michael Gordin | History | Skeptic Check: Science Blunders | 1/28/2013 | 11/25/2013 |
| Carol Graham | Economics | Happy Daze | 10/17/2011 | 3/4/2013 |
| Hank Greely | Law | De-Extinction Show | 4/29/2013 | 8/11/2014 |
| Brian Greene | Physics | Skeptic Check: Friends Like These | 3/25/2013 | 10/27/2014 |
| Brian Greene | Physics | Cosmos: It’s Big, It’s Weird | 1/9/2012 | 6/3/2013 |
| Wayne Grody | Health/Medicine | Skeptic Check: Follywood Science | 7/30/2012 | 9/9/2013 |
| Oliver Guyon | Physics | Life in Space | 10/7/2013 | 3/22/2015 |
| Andrew Hacker | Mathematics | Math’s Days Are Numbered | 12/2/2013 | 6/1/2015 |
| Francis Halzen | Physics | Some Like it Cold | 12/16/2013 | 12/16/2013 |
| Claudia Hammond | Journalism/Technical Writing | Long Live Longevity | 7/29/2013 | 12/1/2014 |
| Robin Hanson | Economics | Meet Your Replacements | 7/1/2013 | 1/5/2015 |
| Guy P. Harrison | Author | Skeptic Check: Friends Like These | 3/25/2013 | 10/27/2014 |
| Alexander Hayes | Planetary Science | Rife with Life | 2/27/2012 | 7/22/2013 |
| Robert Hazen | Geology | Deep Time | 4/22/2013 | 7/7/2014 |
| Jennifer Heldmann | Aeronautics/Space | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Don Henderson | Biology | Life Back Then | 4/2/2012 | 11/4/2013 |
| Denise Herzing | Biology | Life in Space | 10/7/2013 | 3/22/2015 |
| Markus Hotakainen | Astronomy | Our Tasteless Show | 3/11/2013 | 4/28/2014 |
| Matthew Hutson | Author | Skeptic Check: Friends Like These | 3/25/2013 | 10/27/2014 |
| Salim Ikram | Anthropology | Skeptic Check: Mummy Dearest | 6/24/2013 | 1/26/2015 |
| Robin Ince | Entertainment | Happy Daze | 10/17/2011 | 3/4/2013 |
| Fatimah Jackson | Biology | Digging Our Past | 8/12/2013 | 2/2/2015 |
| Paul Jacobs | Industry | What the Hack | 11/11/2013 | 6/29/2015 |
| Joseph Jones | Anthropology | Digging Our Past | 8/12/2013 | 2/2/2015 |
| Owen Jones | Law | Whodunit, Who’ll Do It? | 9/19/2011 | 2/18/2013 |
| Nancy Kanwisher | Neuroscience | Skeptic Check: About Face | 2/25/2013 | 7/14/2014 |
| Joe Karnicky | Engineering | We Heart Robots | 1/21/2013 | 3/10/2014 |
| Lucas Kavner | Journalism/Technical Writing | Skeptic Check: Follywood Science | 7/30/2012 | 9/9/2013 |
| Manfred Kayser | Biology | Whodunit, Who’ll Do It? | 9/19/2011 | 2/18/2013 |
| Stephen King | Author | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| David Kirby | Journalism/Technical Writing | Skeptic Check: Follywood Science | 7/30/2012 | 9/9/2013 |
| George Kourounis | Earth Sciences/Ecology/Climate Change | Whither the Weather? | 9/12/2011 | 1/14/2013 |
| Jeff Kuhn | Physics | Life in Space | 10/7/2013 | 3/22/2015 |
| Dan Lankford | Industry | That’s Containment! | 2/4/2013 | 4/14/2014 |
| Greger Larsen | Biology | You Say You Want an Evolution? | 9/16/2013 | 9/16/2013 |
| Albert Lazzarini | Physics | Catch a Wave | 3/19/2012 | 9/2/2013 |
| Pascal Lee | Planetary Science | Some Like it Cold | 12/16/2013 | 12/16/2013 |
| Theresa Levitt | History | Power to the People | 9/30/2013 | 3/23/2015 |
| Nate Lewis | Chemistry | That’s Containment! | 2/4/2013 | 4/14/2014 |
| Rob Lillis | Physics | Rife with Life | 2/27/2012 | 7/22/2013 |
| Darren Lipomi | Chemistry | Material Whirl | 1/30/2012 | 7/8/2013 |
| Kenneth Lohmann | Biology | Time for a Map | 3/18/2013 | 6/30/2014 |
| John Long | Biology | We Heart Robots | 1/21/2013 | 3/10/2014 |
| Robert Lustig | Author | Skeptic Check: Got a Sweet Truth? | 8/19/2013 | 12/29/2014 |
| Kevin MacVittie | Chemistry | That’s Containment! | 2/4/2013 | 4/14/2014 |
| Michael Macy | Sociology | Happy Daze | 10/17/2011 | 3/4/2013 |
| Rob Manning | Aeronautics/Space | Math’s Days Are Numbered | 12/2/2013 | 6/1/2015 |
| Jo Marchant | Author | Skeptic Check: Mummy Dearest | 6/24/2013 | 1/26/2015 |
| Geoff Marcy | Astronomy | Exoplanets | 6/17/2013 | 6/17/2013 |
| Jason Mark | Journalism/Technical Writing | Science Fiction True | 12/22/2013 | 7/4/2016 |
| Linda Marsa | Journalism/Technical Writing | The Heat is On | 11/18/2013 | 11/18/2013 |
| Alan Marscher | Astronomy | Catch a Wave | 3/19/2012 | 9/2/2013 |
| Marco Mascorro | Robotics/IA | We Heart Robots | 1/21/2013 | 3/10/2014 |
| Jeff Masters | Earth Sciences/Ecology/Climate Change | The Heat is On | 11/18/2013 | 11/18/2013 |
| Rachel Mastrapa | Planetary Science | Rife with Life | 2/27/2012 | 7/22/2013 |
| Christopher McKay | Planetary Science | Say La Vie | 2/11/2013 | 5/26/2014 |
| Bill McKibben | Earth Sciences/Ecology/Climate Change | This Land is Island | 6/10/2013 | 11/24/2014 |
| Pat Michaels | Education | Shutting Down Science | 10/28/2013 | 10/28/2013 |
| Emmanuel Mignot | Psychology | ZZZZZs Please | 5/27/2013 | 8/25/2014 |
| Jill Mikucki | Biology | Shutting Down Science | 10/28/2013 | 10/28/2013 |
| Jill Mikucki | Biology | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Jill Mikucki | Biology | Say La Vie | 2/11/2013 | 5/26/2014 |
| F. DeWolfe Miller | Health/Medicine | Skeptic Check: Mummy Dearest | 6/24/2013 | 1/26/2015 |
| Marc Millis | Physics | Getting a Spacelift | 2/6/2012 | 7/15/2013 |
| David Morrison | Planetary Science | Invisible Worlds | 9/23/2013 | 4/27/2015 |
| Michael Moss | Journalism/Technical Writing | Skeptic Check: Got a Sweet Truth? | 8/19/2013 | 12/29/2014 |
| Luke Muehlhauser | Robotics/IA | Meet Your Replacements | 7/1/2013 | 1/5/2015 |
| Barbara Natteson-Horowitz | Health/Medicine | Animal Instinct | 7/9/2012 | 12/30/2013 |
| Annalee Newitz | Journalism/Technical Writing | Meet Your Replacements | 7/1/2013 | 1/5/2015 |
| Stuart Newman | Health/Medicine | Meet Your Replacements | 7/1/2013 | 1/5/2015 |
| Miguel Nicolelis | Neuroscience | Ultimate Hook Up | 7/4/2011 | 1/7/2013 |
| Illah Nourbakhsh | Robotics/IA | We Heart Robots | 1/21/2013 | 3/10/2014 |
| Ben Novak | Biology | Skeptic Check: Monster Mashup | 12/9/2013 | 4/13/2015 |
| Ben Novak | Biology | De-Extinction Show | 4/29/2013 | 8/11/2014 |
| Steven Novella | Neuroscience | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Steven Novella | Neuroscience | Skeptic Check: Friends Like These | 3/25/2013 | 10/27/2014 |
| Lorna O’Brien | Evolutionary Sciences | Life Back Then | 4/2/2012 | 11/4/2013 |
| Dennis Overbye | Journalism/Technical Writing | Cosmos: It’s Big, It’s Weird | 1/9/2012 | 6/3/2013 |
| Jenny Papka | Biology | Sounds Abound | 8/5/2013 | 11/3/2014 |
| Niki Parenteau | Astrobiology | Our Tasteless Show | 3/11/2013 | 4/28/2014 |
| Christian Parenti | Journalism/Technical Writing | Whither the Weather? | 9/12/2011 | 1/14/2013 |
| Josef Parvizi | Health/Medicine | Skeptic Check: About Face | 2/25/2013 | 7/14/2014 |
| Fred Pearce | Journalism/Technical Writing | The Heat is On | 11/18/2013 | 11/18/2013 |
| Roland Pease | Journalism/Technical Writing | Shutting Down Science | 10/28/2013 | 10/28/2013 |
| Alison Peck | Astronomy | Deep Time | 4/22/2013 | 7/7/2014 |
| Pietro Perona | Engineering | Skeptic Check: About Face | 2/25/2013 | 7/14/2014 |
| Cynthia Phillips | Planetary Science | Rife with Life | 2/27/2012 | 7/22/2013 |
| Phil Plait | Astronomy | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Phil Plait | Astronomy | Skeptic Check: About Face | 2/25/2013 | 7/14/2014 |
| Phil Plait | Astronomy | Skeptic Check: Science Blunders | 1/28/2013 | 11/25/2013 |
| Phil Plait | Astronomy | Skeptic Check: Hostile Climate | 5/20/2013 | 5/20/2013 |
| Phil Plait | Astronomy | Skeptic Check: Forget with the Program | 5/7/2012 | 4/15/2013 |
| Michael Porter | Mathematics | Sounds Abound | 8/5/2013 | 11/3/2014 |
| Patrick Porter | Other | Sounds Abound | 8/5/2013 | 11/3/2014 |
| Steve Potter | Neuroscience | Emergence | 10/14/2013 | 5/11/2015 |
| Donald Prothero | Geology | Skeptic Check: Monster Mashup | 12/9/2013 | 4/13/2015 |
| Nicholas Pyenson | Biology | Deep Time | 4/22/2013 | 7/7/2014 |
| Vincent Racaniello | Biology | Going Viral | 12/12/2011 | 5/13/2013 |
| Margaret Race | Biology | This Land is Island | 6/10/2013 | 11/24/2014 |
| Ben Radford | Sociology | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| Steve Ramirez | Neuroscience | Science Fiction True | 12/22/2013 | 7/4/2016 |
| Scott Ransom | Astronomy | Invisible Worlds | 9/23/2013 | 4/27/2015 |
| Ronald Reinstein | Journalism/Technical Writing | Skeptic Check: Forget with the Program | 5/7/2012 | 4/15/2013 |
| David Reitze | Physics | Catch a Wave | 3/19/2012 | 9/2/2013 |
| Rob Rhinehart | Industry | Science Fiction True | 12/22/2013 | 7/4/2016 |
| Peter Richerson | Cosmology | You Say You Want an Evolution? | 9/16/2013 | 9/16/2013 |
| Mary Roach | Author | Stomach This | 5/6/2013 | 5/6/2013 |
| Mark Robinson | Anthropology | Anthropocene and Heard | 10/24/2011 | 4/1/2013 |
| Jim Rosenau | Art | Deep Time | 4/22/2013 | 7/7/2014 |
| Josh Rosenau | Education | Skeptic Check: Hostile Climate | 5/20/2013 | 5/20/2013 |
| James Rothman | Biology | Shutting Down Science | 10/28/2013 | 10/28/2013 |
| Erica Rowan | History | Anthropocene and Heard | 10/24/2011 | 4/1/2013 |
| Paul Rozin | Psychology | Stomach This | 5/6/2013 | 5/6/2013 |
| James Ruff | Biology | Skeptic Check: Got a Sweet Truth? | 8/19/2013 | 12/29/2014 |
| Rafe Sagarin | Earth Sciences/Ecology/Climate Change | Animal Instinct | 7/9/2012 | 12/30/2013 |
| Curt Salisbury | Education | We Heart Robots | 1/21/2013 | 3/10/2014 |
| Scott Sampson | Biology | Digging Our Past | 8/12/2013 | 2/2/2015 |
| Shankar Sastry | Engineering | What the Hack | 11/11/2013 | 6/29/2015 |
| Keith Sawyer | Psychology | Group Think | 4/30/2012 | 12/23/2013 |
| Robert J. Sawyer | Author | Exoplanets | 6/17/2013 | 6/17/2013 |
| Robert J. Sawyer | Author | Say La Vie | 2/11/2013 | 5/26/2014 |
| Robert J. Sawyer | Author | Rife with Life | 2/27/2012 | 7/22/2013 |
| Ted Scambos | Earth Sciences/Ecology/Climate Change | Some Like it Cold | 12/16/2013 | 12/16/2013 |
| Jeffrey Scargle | Astronomy | Whither the Weather? | 9/12/2011 | 1/14/2013 |
| Linda Schadler | Engineering | Material Whirl | 1/30/2012 | 7/8/2013 |
| Randy Schekman | Biology | Emergence | 10/14/2013 | 5/11/2015 |
| Kevin Schindler | Astronomy | Skeptic Check: War of the Worlds | 10/21/2013 | 10/21/2013 |
| Todd Schlenke | Biology | Life Back Then | 4/2/2012 | 11/4/2013 |
| Karel Schrijver | Physics | Seth’s Wine Cellar | 4/8/2013 | 4/8/2013 |
| Ivan Schwab | Health/Medicine | Life Back Then | 4/2/2012 | 11/4/2013 |
| Eugenie Scott | Education | Skeptic Check: Hostile Climate | 5/20/2013 | 5/20/2013 |
| Beth Shapiro | Earth Sciences/Ecology/Climate Change | De-Extinction Show | 4/29/2013 | 8/11/2014 |
| Tali Sharot | Neuroscience | Happy Daze | 10/17/2011 | 3/4/2013 |
| Gordon Shepherd | Neuroscience | Our Tasteless Show | 3/11/2013 | 4/28/2014 |
| Neil Shubin | Biology | Deep Time | 4/22/2013 | 7/7/2014 |
| Jerry Siegel | Aeronautics/Space | ZZZZZs Please | 5/27/2013 | 8/25/2014 |
| John Sievenpiper | Health/Medicine | Skeptic Check: Got a Sweet Truth? | 8/19/2013 | 12/29/2014 |
| Ray Sims | Computer Science | What the Hack | 11/11/2013 | 6/29/2015 |
| Simon Singh | Journalism/Technical Writing | Math’s Days Are Numbered | 12/2/2013 | 6/1/2015 |
| Michael Smith | Earth Sciences/Ecology/Climate Change | Whither the Weather? | 9/12/2011 | 1/14/2013 |
| Lee Smolin | Physics | Invisible Worlds | 9/23/2013 | 4/27/2015 |
| Charles Sobeck | Aeronautics/Space | Exoplanets | 6/17/2013 | 6/17/2013 |
| Michael Socolow | Journalism/Technical Writing | Skeptic Check: War of the Worlds | 10/21/2013 | 10/21/2013 |
| Sanjoy Som | Astrobiology | Seth’s Wine Cellar | 4/8/2013 | 4/8/2013 |
| Justin Sonnenburg | Biology | This Land is Island | 6/10/2013 | 11/24/2014 |
| Chris Sorensen | Physics | Seth’s Wine Cellar | 4/8/2013 | 4/8/2013 |
| Betsy Sparrow | Psychology | Skeptic Check: Forget with the Program | 5/7/2012 | 4/15/2013 |
| Craig Stark | Neuroscience | Skeptic Check: Forget with the Program | 5/7/2012 | 4/15/2013 |
| Simon Steel | Astronomy | Cosmos: It’s Big, It’s Weird | 1/9/2012 | 6/3/2013 |
| William Steffen | Earth Sciences/Ecology/Climate Change | Anthropocene and Heard | 10/24/2011 | 4/1/2013 |
| Jackie Stephens | Biology | That’s Containment! | 2/4/2013 | 4/14/2014 |
| Nathan J.Strange | Aeronautics/Space | Getting a Spacelift | 2/6/2012 | 7/15/2013 |
| Jack Szostak | Chemistry | Say La Vie | 2/11/2013 | 5/26/2014 |
| Joseph Tainter | Earth Sciences/Ecology/Climate Change | Group Think | 4/30/2012 | 12/23/2013 |
| Harvey Tananbaum | Astronomy | Catch a Wave | 3/19/2012 | 9/2/2013 |
| Kyle Taylor | Biology | ZZZZZs Please | 5/27/2013 | 8/25/2014 |
| James Trefil | Physics | Time for a Map | 3/18/2013 | 6/30/2014 |
| Barry Trimmer | Biology | Welcome to our Labor-atory | 8/26/2013 | 9/1/2014 |
| Sherry Turkle | Sociology | Ultimate Hook Up | 7/4/2011 | 1/7/2013 |
| Neil deGrasse Tyson | Astronomy | Getting a Spacelift | 2/6/2012 | 7/15/2013 |
| Neil deGrasse Tyson | Astronomy | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| James Underdown | Sociology | Fundest Show Ever | 5/13/2013 | 5/13/2013 |
| James Underdown | Sociology | Skeptic Check: Science Blunders | 1/28/2013 | 11/25/2013 |
| Douglas Vakoch | Sociology | Anthropocene and Heard | 10/24/2011 | 4/1/2013 |
| Leslie Valiant | Computer Science | Emergence | 10/14/2013 | 5/11/2015 |
| Dave van Ditmarsch | Biology | You Say You Want an Evolution? | 9/16/2013 | 9/16/2013 |
| Vladan Vuletic | Physics | Some Like it Cold | 12/16/2013 | 12/16/2013 |
| Stuart Vyse | Psychology | Skeptic Check: Mummy Dearest | 6/24/2013 | 1/26/2015 |
| Andrew Wade | Anthropology | Skeptic Check: Mummy Dearest | 6/24/2013 | 1/26/2015 |
| Jesse Walker | Journalism/Technical Writing | Skeptic Check: War of the Worlds | 10/21/2013 | 10/21/2013 |
| Shannon Walker | Aeronautics/Space | Getting a Spacelift | 2/6/2012 | 7/15/2013 |
| Peter Ward | Biology | Skeptic Check: Hostile Climate | 5/20/2013 | 5/20/2013 |
| Bill Wasik | Journalism/Technical Writing | Going Viral | 12/12/2011 | 5/13/2013 |
| Michael Webster | Neuroscience | Sounds Abound | 8/5/2013 | 11/3/2014 |
| Nicolas Weidinger | Futurist | Material Whirl | 1/30/2012 | 7/8/2013 |
| Alan Weisman | Author | The Heat is On | 11/18/2013 | 11/18/2013 |
| Margaret Wertheim | Journalism/Technical Writing | Cosmos: It’s Big, It’s Weird | 1/9/2012 | 6/3/2013 |
| William “Red” Whittaker | Robotics/IA | Time for a Map | 3/18/2013 | 6/30/2014 |
| William “Red” Whittaker | Robotics/IA | Welcome to our Labor-atory | 8/26/2013 | 9/1/2014 |
| Martin Wickham | Health/Medicine | Stomach This | 5/6/2013 | 5/6/2013 |
| Peter Williams | Earth Sciences/Ecology/Climate Change | That’s Containment! | 2/4/2013 | 4/14/2014 |
| Nathan Wolfe | Earth Sciences/Ecology/Climate Change | Going Viral | 12/12/2011 | 5/13/2013 |
| Paul Young | Industry | Power to the People | 9/30/2013 | 3/23/2015 |
| Sera Young | Health/Medicine | Digging Our Past | 8/12/2013 | 2/2/2015 |
| Jeffrey Zacks | Neuroscience | Science Fiction True | 12/22/2013 | 7/4/2016 |
