Mike Brown and Konstantin Batygin: The Planet 9 Guys

Simon Singh: Religion and Science Shake Hands

Simon Singh: It All Started with the Big Bang

Simon Singh: D'oh = mc²

Matt Denton: How to Make a Lovable Robot

Matt Denton - Cinema 101: The Uses of Deodorant

Matt Denton: An Amazing Journey... to a Galaxy Far, Far Away

Matt Denton - BB-8: A Star Wars Droid's Seven Secrets

Kathy Reichs: Only for David Duchovny

Kathy Reichs: She Couldn't Even Dissect a Frog

Kathy Reichs: Digging up 'Bones'

Dame Stephanie Shirley: Kindertransport

Dame Stephanie Shirley: Great Dame

Dame Stephanie Shirley - Our Women's Company

Cheri Blauwet: Having a Disability Makes Me a Better Doctor

Cheri Blauwet: I'm the Doctor, Not the Patient

Cheri Blauwet: I Brought Home the Gold... in a Wheelchair

John Horgan: The Secret Life of Terrorists

John Horgan: The Dangers of Hanging Out with Terrorists

John Horgan: There's Always Hope

Nicole Prause: What Women (Don't) Need

Nicole Prause: Great Balls of Fire

Nicole Prause: (You Gotta) Fight for Your Right (To Do Science)

Chris Hadfield: The Universe Surrounds You

Chris Hadfield: Deep Questions for a Star Man

Chris Hadfield: Space Oddity

Janet Iwasa: Animating HIV

Janet Iwasa: Science Goes Hollywood

Janet Iwasa: Biologists with Movies in Their Heads

Danica McKellar: My First Kiss