Life Science / Season 4 Season guide Life Science: Season 4 39 episodes Premiered Jan 1, 2006 Updated Jul 28, 2026 Spoiler-safe Advertisement Episodes S4·E1 Episode 1 Jan 1, 2006 · 60 min S4·E2 Episode 2 Jan 1, 2006 · 60 min S4·E3 Episode 3 Jan 1, 2006 · 60 min S4·E4 Episode 4 Jan 1, 2006 · 60 min S4·E5 Episode 5 Jan 1, 2006 · 60 min S4·E6 Episode 6 Jan 1, 2006 · 60 min S4·E7 Episode 7 Jan 1, 2006 · 60 min S4·E8 Episode 8 Jan 1, 2006 · 60 min S4·E9 Episode 9 Jan 1, 2006 · 60 min S4·E10 Episode 10 Jan 1, 2006 · 60 min S4·E11 Episode 11 Jan 1, 2006 · 60 min S4·E12 Episode 12 Jan 1, 2006 · 60 min S4·E13 Episode 13 Jan 1, 2006 · 60 min S4·E14 Episode 14 Jan 1, 2006 · 60 min S4·E15 Episode 15 Jan 1, 2006 · 60 min S4·E16 Episode 16 Jan 1, 2006 · 60 min S4·E17 Episode 17 Jan 1, 2006 · 60 min S4·E18 Episode 18 Jan 1, 2006 · 60 min S4·E19 Episode 19 Jan 1, 2006 · 60 min S4·E20 Episode 20 Jan 1, 2006 · 60 min S4·E21 Episode 21 Jun 1, 2006 · 60 min S4·E22 Episode 22 Jun 1, 2006 · 60 min S4·E23 Episode 23 Jun 1, 2006 · 60 min S4·E24 Episode 24 Jun 1, 2006 · 60 min S4·E25 Episode 25 Jun 1, 2006 · 60 min S4·E26 Episode 26 Jun 1, 2006 · 60 min S4·E27 Episode 27 Jun 1, 2006 · 60 min S4·E28 Episode 28 Jun 1, 2006 · 60 min S4·E29 Episode 29 Jun 1, 2006 · 60 min S4·E30 Episode 30 Jun 1, 2006 · 60 min S4·E31 Episode 31 Jun 1, 2006 · 60 min S4·E32 Episode 32 Jun 1, 2006 · 60 min S4·E33 Episode 33 Jun 1, 2006 · 60 min S4·E34 Episode 34 Jun 1, 2006 · 60 min S4·E35 Episode 35 Jun 1, 2006 · 60 min S4·E36 Episode 36 Jun 1, 2006 · 60 min S4·E37 Episode 37 Jun 1, 2006 · 60 min S4·E38 Episode 38 Jun 1, 2006 · 60 min S4·E39 Episode 39 Jun 1, 2006 · 60 min