E1 - Sex, Lies and Secrecy: Dissecting Hysterectomy

Aired: September 16, 2004

E2 - Terrible Lizards of Oz

Aired: September 23, 2004

E3 - Selling Sickness

Aired: September 30, 2004

E4 - Arktika: The Russian Dream That Failed

Aired: October 07, 2004

E5 - Shipbreakers

Aired: October 14, 2004

E6 - Clot Busters

Aired: October 21, 2004

E7 - Killed By Care: Making Medicine Safe

Aired: October 28, 2004

E8 - Tale of a Tiny Bird

Aired: November 04, 2004

E9 - Apocalypse Cow: The Mad Cow Story (Part 1)

Aired: November 18, 2004

E10 - Apocalypse Cow: The Mad Cow Story (Part 2)

Aired: November 25, 2004

E11 - Bhopal: The Search for Justice

Aired: December 09, 2004

E12 - Forbidden Forest

Aired: January 06, 2005

E13 - Passion & Fury: The Emotional Brain: Anger

Aired: March 22, 2005

E14 - Passion & Fury: The Emotional Brain: Love

Aired: March 29, 2005

E15 - Passion & Fury: The Emotional Brain: Fear

Aired: May 11, 2005

E16 - Passion & Fury: The Emotional Brain: Happiness

Aired: May 18, 2005

E17 - Fighting Fire with Fire

Aired: May 26, 2005

E18 - Being Caribou: Part 1

Aired: June 02, 2005

E19 - Being Caribou: Part 2

Aired: June 09, 2005

E20 - Whale Mission: The Last Giants

Aired: June 23, 2005

E21 - Whale Mission: Keepers of Memory

Aired: June 30, 2005

E22 - Origins of Human Aggression: The Other Story

Aired: July 07, 2005

E23 - Five Seasons

Aired: July 14, 2005