Horizon: Season 40 (2003)

This season started on January 9, 2003. The table lists episodes with recorded air dates up to September 28, 2026.

Ep	Title and air date	My place
1	The Mystery Of Easter IslandJanuary 9, 2003 · 60 min
2	Living NightmareJanuary 16, 2003 · 60 min
3	Averting ArmageddonJanuary 23, 2003 · 60 min
4	Dirty BombJanuary 30, 2003 · 60 min
5	Sexual Chemistry (Update)February 13, 2003 · 60 min
6	The Day We Learned To ThinkFebruary 20, 2003 · 60 min
7	Trial and ErrorFebruary 27, 2003 · 60 min
8	Earthquake StormsMarch 6, 2003 · 60 min
9	Life On Mars (Update)March 27, 2003 · 60 min
10	The Secret Life Of CavesApril 3, 2003 · 60 min
11	God On The BrainApril 17, 2003 · 60 min
12	Flight 587May 8, 2003 · 60 min
13	SARS: The True StoryMay 29, 2003 · 60 min
14	The Big ChillNovember 13, 2003 · 60 min
15	The Bible CodeNovember 20, 2003 · 60 min
16	Last Flight of the ColumbiaNovember 27, 2003 · 60 min
17	The Hunt for an AIDS VaccineDecember 4, 2003 · 60 min
18	Percy Pilcher's Flying MachineDecember 11, 2003 · 60 min
19	Time TripDecember 18, 2003 · 60 min