NOVA — Season 31

E01 Infinite Secrets 30 Sep 2003 E02 Who Killed the Red Baron? 07 Oct 2003 E03 The Elegant Universe: Einstein's Dream (1) 28 Oct 2003 E04 The Elegant Universe: String's the Thing (2) 28 Oct 2003 E05 The Elegant Universe: Welcome to the 11th Dimension (3) 04 Nov 2003 E06 Wright Brothers' Flying Machine 11 Nov 2003 E07 Magnetic Storm 18 Nov 2003 E08 Volcano Above the Clouds 25 Nov 2003 E09 MARS Dead or Alive 04 Jan 2004 E10 Secrets of the Crocodile Caves 20 Jan 2004 E11 Dogs and More Dogs 03 Feb 2004 E12 Descent Into the Ice 10 Feb 2004 E13 Crash of Flight 111 17 Feb 2004 E14 Life and Death in the War Zone 02 Mar 2004 E15 Hunt for the Supertwister 30 Mar 2004 E16 World in the Balance: The People Paradox (1) 20 Apr 2004 E17 World in the Balance: China Revs Up (2) 20 Apr 2004 E18 Battle Plan Under Fire 04 May 2004