Season 9.
Season 1.Season 2.Season 3.Season 4.Season 5.Season 6.Season 7.Season 8.Season 9.Season 10.Season 11.Season 12.Season 13.Season 14.Season 15.Season 16.Season 17.Season 18.Season 19.Season 20.Season 21.Season 22.Season 23.Season 24.Season 25.Season 26.Season 27.Season 28.Season 29.Season 30.Season 31.Season 32.Season 33.Season 34.Season 35.Season 36.Season 37.Season 38.Season 39.Season 40.Season 41.Season 42.Season 43.Season 44.Season 45.Season 46.Season 47.Season 48.Season 49.Season 50.Season 51.
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Episode 1.Salmon on the Run
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Episode 2.Test-Tube Babies: A Daughter For Judy
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Episode 3.Field Guide to Roger Tory Peterson
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Episode 4.The Hunt for the Legion Killer
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Episode 5.Finding a Voice
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Episode 6.The Television Explosion
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Episode 7.Life: Patent Pending
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Episode 8.Palace of Delights
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Episode 9.Animal Impostors
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Episode 10.Aging: The Methuselah Syndrome
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Episode 11.The Case of the UFOs
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Episode 12.The Fragile Mountain
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Episode 13.Here's Looking At You Kid
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Episode 14.Adventures of Teenage Scientists
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Episode 15.The Cobalt Blues
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Episode 16.Goodbye Louisiana
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Episode 17.Whale Watch
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Episode 18.Tracking The Supertrains
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Episode 19.
Noah's Ark 
The Lord of the Rings: The Return of the King 
Taffy 
Bugs Bunny Builders 
