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Aflevering
S1990E01 - Oil Spill
Eerste uitzending 08/01/1990
S1990E02 - Medicine 2000
Eerste uitzending 15/01/1990
S1990E03 - Food Irradiation: Would You Buy It?
Eerste uitzending 22/01/1990
S1990E04 - From Earth to Miranda
Eerste uitzending 29/01/1990
S1990E05 - Encounter With Neptune
Eerste uitzending 05/02/1990
S1990E06 - Guess What's Coming to Dinner?
Eerste uitzending 12/02/1990
S1990E07 - The First 14 Days
Eerste uitzending 19/02/1990
S1990E08 - The 10,000 Year Test
Eerste uitzending 05/03/1990
S1990E09 - Hurricane!
Eerste uitzending 12/03/1990
S1990E10 - The Britannic Greenhouse
Eerste uitzending 19/03/1990
S1990E11 - Cold Fusion
Eerste uitzending 26/03/1990
S1990E12 - The Quake of '89 - The Final Warning?
Eerste uitzending 02/04/1990
S1990E13 - The Sharpest Shot of the Universe
Eerste uitzending 09/04/1990
S1990E14 - The Company of Ants and Bees
Eerste uitzending 23/04/1990
S1990E15 - The Intelligent Island
Eerste uitzending 30/04/1990
S1990E16 - Legacy of a Volcano
Eerste uitzending 14/05/1990
S1990E17 - Do Cows Make You Mad?
Eerste uitzending 21/05/1990
S1990E18 - The Child Mothers
Eerste uitzending 04/06/1990
S1990E19 - Signs of Life
Eerste uitzending 11/06/1990
S1990E20 - AIDS: A Quest for a Cure
Eerste uitzending 25/06/1990
Aflevering Eerste uitzending
S1990E01 - Oil Spill 08/01/1990
S1990E02 - Medicine 2000 15/01/1990
S1990E03 - Food Irradiation: Would You Buy It? 22/01/1990
S1990E04 - From Earth to Miranda 29/01/1990
S1990E05 - Encounter With Neptune 05/02/1990
S1990E06 - Guess What's Coming to Dinner? 12/02/1990
S1990E07 - The First 14 Days 19/02/1990
S1990E08 - The 10,000 Year Test 05/03/1990
S1990E09 - Hurricane! 12/03/1990
S1990E10 - The Britannic Greenhouse 19/03/1990
S1990E11 - Cold Fusion 26/03/1990
S1990E12 - The Quake of '89 - The Final Warning? 02/04/1990
S1990E13 - The Sharpest Shot of the Universe 09/04/1990
S1990E14 - The Company of Ants and Bees 23/04/1990
S1990E15 - The Intelligent Island 30/04/1990
S1990E16 - Legacy of a Volcano 14/05/1990
S1990E17 - Do Cows Make You Mad? 21/05/1990
S1990E18 - The Child Mothers 04/06/1990
S1990E19 - Signs of Life 11/06/1990
S1990E20 - AIDS: A Quest for a Cure 25/06/1990