September 16, 2004

Season 45

01. Sex, Lies and Secrecy: Dissecting Hysterectomy

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September 16, 2004

02. Terrible Lizards of Oz

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September 23, 2004

03. Selling Sickness

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September 30, 2004

04. Arktika: The Russian Dream That Failed

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October 7, 2004

05. Shipbreakers

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October 14, 2004

06. Clot Busters

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October 21, 2004

07. Killed By Care: Making Medicine Safe

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October 28, 2004

08. Tale of a Tiny Bird

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November 4, 2004

09. Apocalypse Cow: The Mad Cow Story (Part 1)

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November 18, 2004

10. Apocalypse Cow: The Mad Cow Story (Part 2)

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November 25, 2004

11. Bhopal: The Search for Justice

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December 9, 2004

12. Forbidden Forest

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January 6, 2005

13. Passion & Fury: The Emotional Brain: Anger

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March 22, 2005

14. Passion & Fury: The Emotional Brain: Love

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March 29, 2005

15. Passion & Fury: The Emotional Brain: Fear

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May 11, 2005

16. Passion & Fury: The Emotional Brain: Happiness

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May 18, 2005

17. Fighting Fire with Fire

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May 26, 2005

18. Being Caribou: Part 1

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June 2, 2005

19. Being Caribou: Part 2

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June 9, 2005

20. Whale Mission: The Last Giants

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June 23, 2005

21. Whale Mission: Keepers of Memory

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June 30, 2005

22. Origins of Human Aggression: The Other Story

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July 7, 2005

23. Five Seasons

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July 14, 2005