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- 1AquariumsJuly 27, 1998
- 2Las Vegas HotelsAugust 3, 1998
- 4AntibioticsSeptember 28, 1998
- 7Medical Imaging The Voyage InwardOctober 28, 1998
- 9BombsMay 13, 1999
- 10ProstheticsNovember 23, 1998
- 11Weather PredictionsDecember 7, 1998
- 12Stereo and the Sound RevolutionDecember 16, 1998
- 13Mail Delivery Erasing The MilesJanuary 1, 1999
- 15AirshipsJanuary 1, 1999
- 17History Of Tall BuildingsFebruary 8, 1999
- 18Engineering Disasters (1)February 22, 1999
- 19City ParksMarch 9, 1999
- 20Spy TechnologyMarch 15, 1999
- 21Battlefield MedicineMarch 30, 1999
- 22U.S. Mints Money MachinesApril 26, 1999
- 23Rescue TechnologyMay 1, 1999
- 24Scuba Diving & Underwater BreathingMay 25, 1999
- 25DynamiteJune 21, 1999
- 26Offshore Oil DrillingJuly 6, 1999
- 27Hoover DamJuly 12, 1999
- 28Baseball ParksJuly 19, 1999
- 29Oakland Bay BridgeJuly 20, 1999
- 30New York BridgesAugust 2, 1999
- 31Crash TestingAugust 9, 1999
- 32ParachutesAugust 23, 1999
- 33NewspapersAugust 31, 1999
- 34FireworksSeptember 6, 1999
- 35The Atlantic WallSeptember 13, 1999
- 36SimulatorsSeptember 27, 1999
- 37The Tool Bench Power ToolsOctober 11, 1999
- 38The Tool Bench Hand ToolsOctober 12, 1999
- 39More Earth MoversOctober 13, 1999
- 40FortsOctober 18, 1999
- 41Emergency RoomOctober 25, 1999
- 42DemolitionNovember 8, 1999
- 43MotorcyclesNovember 15, 1999
- 44Security SystemsNovember 16, 1999
- 45Engineering Disasters (2)November 29, 1999
- 46Niagara PowerDecember 8, 1999
- 47Casino TechnologyDecember 13, 1999
- 48Lost MarvelsDecember 14, 1999