Robert Full: How engineers learn from evolution (TED) (21 min)

Louise Leakey: Digging for humanity's origins (16 min)

A.J. Jacobs: My year of living biblically (TED) (18 min)

Craig Venter: On the verge of creating synthetic life (35 min)

Steven Pinker: A brief history of violence (TED) (21 min)

Philippe Starck: Why design? (18 min)

Robert Full: Secrets of movement, from geckos and roaches (TED) (20 min)

Vilayanur Ramachandran: A journey to the center of your mind (TED) (25 min)

Stephen Petranek: 10 ways the world could end (30 min)

Paul MacCready: Flying on solar wings

Richard Branson: Life at 30,000 feet- the ups and downs of his career(TED) (30 min)

Carolyn Porco: Fly me to the moons of Saturn (20 min)

Hod Lipson: Robots That Are "Self-aware" (TED) (8 min)

Paul Rothemund: Casting spells with DNA (TED) (6 min)

Steven Pinker- A brief history of violence (TED)(21 min)

Julia Sweeney: Letting Go of God (excerpt): (TED) (17 min)

Dan Dennett Talks About "The Purpose Driven Life" (25.5 min)

Michael Shermer- Why People Believe Strange Things (13 min)

Richard Dawkins- Call To Arms (TED) (30 min)

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Richard Dawkins- at TED- "Queerer Than We Suppose: The Strangeness of Science." (23 min)