| Season 12 |
| # | Title | Air Date |
| 69 | Nature Tech: Hurricanes | Thu 29 Dec '05 |
| 68 | Walt Disney World | Sun 25 Dec '05 |
| 67 | More Snackfood Tech | Tue 20 Dec '05 |
| 66 | More Hardware | Tue 06 Dec '05 |
| 65 | Da Vinci Tech | Sun 04 Dec '05 |
| 64 | The Lumberyard | Wed 30 Nov '05 |
| 63 | Brewing | Wed 16 Nov '05 |
| 62 | Engineering Disasters 17 | Wed 02 Nov '05 |
| 61 | Mountain Roads | Fri 28 Oct '05 |
| 60 | Secret Allied Aircraft of WWII | Thu 13 Oct '05 |
| 59 | The Auto Store | Wed 05 Oct '05 |
| 58 | German Small Arms of WWII | Sat 24 Sep '05 |
| 57 | F-117: Nighthawk Stealth | Thu 22 Sep '05 |
| 56 | F-18 Hornet | Thu 22 Sep '05 |
| 55 | Sewers | Sat 17 Sep '05 |
| 54 | Cereal: History in a Bowl | Wed 14 Sep '05 |
| 53 | Coffee | Wed 14 Sep '05 |
| 52 | Sugar | Wed 14 Sep '05 |
| 51 | Untitled Episode | Tue 13 Sep '05 |
| 50 | HMS Victory | Fri 02 Sep '05 |
| 49 | Nature Tech: Lightning | Wed 31 Aug '05 |
| 48 | Wiring America | Wed 31 Aug '05 |
| 47 | High Risk: Helicopter Linemen | Wed 31 Aug '05 |
| 46 | B-2 Bomber | Fri 26 Aug '05 |
| 45 | Route 66 | Wed 24 Aug '05 |
| 44 | The World's Fastest | Wed 24 Aug '05 |
| 43 | Secret Luftwaffe Aircraft of WWII | Wed 17 Aug '05 |
| 42 | Lube Job | Wed 10 Aug '05 |
| 41 | Dredging | Wed 03 Aug '05 |
| 40 | World's Biggest Machines 4 | Tue 02 Aug '05 |
| 39 | Challenger Tank | Fri 29 Jul '05 |
| 38 | Cowboy Tech | Wed 20 Jul '05 |
| 37 | Big Rigs of Combat: Tanks/Jeeps | Thu 07 Jul '05 |
| 36 | Secrets of Soviet Space Disasters | Fri 01 Jul '05 |
| 35 | Edison Tech | Tue 28 Jun '05 |
| 34 | Future Tech | Wed 22 Jun '05 |
| 33 | Private Collections | Sun 19 Jun '05 |
| 32 | Secret Japanese Aircraft of WWII | Thu 16 Jun '05 |
| 31 | The Cape Cod Canal | Wed 15 Jun '05 |
| 30 | The John Hancock Center | Wed 08 Jun '05 |
| 29 | Machines of D-Day | Fri 03 Jun '05 |
| 28 | Civil War Tech | Wed 25 May '05 |
| 27 | F/A-22 Raptor | Fri 20 May '05 |
| 26 | Glue | Wed 18 May '05 |
| 25 | Bricks | Wed 11 May '05 |
| 24 | Punishment | Thu 28 Apr '05 |
| 23 | Mega Movers | Wed 27 Apr '05 |
| 22 | Paint | Wed 27 Apr '05 |
| 21 | The Basement | Tue 26 Apr '05 |
| 20 | The Doomsday Clock | Thu 07 Apr '05 |
| 19 | Private Jets | Mon 21 Mar '05 |
| 18 | Construction Machines | Wed 16 Mar '05 |
| 17 | Deadliest Weapons | Wed 16 Mar '05 |
| 16 | Race Cars | Mon 14 Mar '05 |
| 15 | Taxidermy | Wed 09 Mar '05 |
| 14 | SWAT | Wed 09 Mar '05 |
| 13 | Edwards Air Force Base | Wed 02 Mar '05 |
| 12 | Howard Hughes Tech | Mon 28 Feb '05 |
| 11 | Sub Zero | Wed 23 Feb '05 |
| 10 | Desert Tech | Wed 23 Feb '05 |
| 9 | George Washington Carver Tech | Tue 15 Feb '05 |
| 8 | Firefighting!: Extreme Conditions | Tue 15 Feb '05 |
| 7 | Blackbird Stealth! | Fri 04 Feb '05 |
| 6 | The Butcher | Tue 01 Feb '05 |
| 5 | World's Biggest Machines 3 | Wed 26 Jan '05 |
| 4 | Nature's Engineers 2 | Tue 18 Jan '05 |
| 3 | The Arch | Wed 12 Jan '05 |
| 2 | Car Tech of the Future | Thu 06 Jan '05 |
| 1 | Poison | Wed 05 Jan '05 |
| Season 11 |
| # | Title | Air Date |
| 84 | The Computer | Wed 29 Dec '04 |
| 83 | More Doomsday Tech | Tue 28 Dec '04 |
| 82 | Doomsday Tech 1 | Tue 28 Dec '04 |
| 81 | Engineering Disasters 16 | Thu 23 Dec '04 |
| 80 | Ancient Discoveries: Ancient Computer? | Wed 22 Dec '04 |
| 79 | Ancient Discoveries: Galen, Doctor to the Gladiators | Wed 22 Dec '04 |
| 78 | Ancient Discoveries: Heron of Alexandria | Wed 22 Dec '04 |
| 77 | Commercial Fishing | Tue 21 Dec '04 |
| 76 | More Dangerous Cargo | Tue 21 Dec '04 |
| 75 | Snackfood Tech | Thu 16 Dec '04 |
| 74 | Boys' Toys: Private Jets 2 | Fri 10 Dec '04 |
| 73 | Boys' Toys: Private Jets 1 | Fri 10 Dec '04 |
| 72 | Boys' Toys: Howard Hughes Tech | Thu 09 Dec '04 |
| 71 | Boys' Toys: Limos | Wed 08 Dec '04 |
| 70 | Engineering Disasters 15 | Wed 08 Dec '04 |
| 69 | Boys' Toys: Motorcycles | Tue 07 Dec '04 |
| 68 | Boys' Toys: Private Collections | Mon 06 Dec '04 |
| 67 | Washington Monument | Wed 01 Dec '04 |
| 66 | Movie Theaters | Wed 24 Nov '04 |
| 65 | Engineering Disasters 14 | Tue 23 Nov '04 |
| 64 | Sub Disasters | Wed 17 Nov '04 |
| 63 | Engineering Disasters 13 | Tue 16 Nov '04 |
| 62 | Surveillance Tech | Wed 10 Nov '04 |
| 61 | Engineering Disasters 12 | Tue 09 Nov '04 |
| 60 | M1 Abrams Supertank! | Fri 29 Oct '04 |
| 59 | Japanese Sub at Pearl Harbor | Thu 28 Oct '04 |
| 58 | Terror Tech: Military | Wed 27 Oct '04 |
| 57 | The World's Longest Bridge | Wed 27 Oct '04 |
| 56 | Engineering Disasters 11 | Tue 26 Oct '04 |
| 55 | Fire and Ice | Tue 26 Oct '04 |
| 54 | Presidential Movers | Wed 20 Oct '04 |
| 53 | Gas Tech | Wed 20 Oct '04 |
| 52 | Engineering Disasters 10 | Tue 19 Oct '04 |
| 51 | Guns of the Civil War | Fri 15 Oct '04 |
| 50 | Sears Tower | Wed 13 Oct '04 |
| 49 | Engineering Disasters 9 | Tue 12 Oct '04 |
| 48 | Harvesting | Wed 06 Oct '04 |
| 47 | Nature Tech: Tsunamis | Wed 06 Oct '04 |
| 46 | Engineering Disasters 8 | Tue 05 Oct '04 |
| 45 | SOS Tech | Sat 02 Oct '04 |
| 44 | Guns of Israel | Fri 01 Oct '04 |
| 43 | Firefighting!: The Arson Detectives | Thu 30 Sep '04 |
| 42 | More of the World's Biggest Machines | Wed 29 Sep '04 |
| 41 | Police Pursuit | Wed 22 Sep '04 |
| 40 | Guns of WWII | Fri 17 Sep '04 |
| 39 | St. Lawrence Seaway | Wed 15 Sep '04 |
| 38 | Building a Skyscraper: The Human Environment | Tue 07 Sep '04 |
| 37 | Building a Skyscraper: The Arteries | Tue 07 Sep '04 |
| 36 | Building a Skyscraper: The Skeleton | Mon 06 Sep '04 |
| 35 | Building a Skyscraper: The Exterior | Mon 06 Sep '04 |
| 34 | Extreme Aircraft | Wed 25 Aug '04 |
| 33 | Athens Subway | Wed 18 Aug '04 |
| 32 | Engineering Disasters 7 | Wed 11 Aug '04 |
| 31 | Oil Tankers | Wed 11 Aug '04 |
| 30 | World War I Tech | Fri 30 Jul '04 |
| 29 | George Washington Bridge | Wed 28 Jul '04 |
| 28 | Apollo 11 | Wed 21 Jul '04 |
| 27 | Distilleries | Wed 14 Jul '04 |
| 26 | Nuclear Tech | Thu 08 Jul '04 |
| 25 | Robots | Tue 06 Jul '04 |
| 24 | Greatest Movie Gadgets | Thu 17 Jun '04 |
| 23 | City Water | Tue 15 Jun '04 |
| 22 | Rubber | Wed 09 Jun '04 |
| 21 | A-10 Tankbuster | Mon 07 Jun '04 |
| 20 | D-Day Tech | Thu 03 Jun '04 |
| 19 | Plane Crashes | Wed 26 May '04 |
| 18 | The Subs of WWII | Thu 20 May '04 |
| 17 | Command Central | Sat 15 May '04 |
| 16 | The Wheel | Fri 14 May '04 |
| 15 | Hydraulics | Wed 12 May '04 |
| 14 | Engineering Disasters 6 | Wed 28 Apr '04 |
| 13 | Bathroom Tech | Wed 21 Apr '04 |
| 12 | The Power Grid | Wed 14 Apr '04 |
| 11 | Bible Tech | Wed 07 Apr '04 |
| 10 | Nature's Engineers | Wed 31 Mar '04 |
| 9 | Frontline Reporting | Fri 19 Mar '04 |
| 8 | Command Central | Wed 17 Mar '04 |
| 7 | Oil Fire Fighting | Wed 03 Mar '04 |
| 6 | Racetrack Tech | Wed 18 Feb '04 |
| 5 | Ship of Gold | Fri 13 Feb '04 |
| 4 | Gangster Guns | Thu 12 Feb '04 |
| 3 | Pacific Coast Highway | Wed 04 Feb '04 |
| 2 | The Submarines | Thu 22 Jan '04 |
| 1 | Guns of the Russian Military | Fri 16 Jan '04 |
| Season 10 |
| # | Title | Air Date |
| 114 | Engineering Disasters 5 | Tue 30 Dec '03 |
| 113 | Toys | Tue 23 Dec '03 |
| 112 | The Berlin Wall | Fri 19 Dec '03 |
| 111 | Egyptian Pyramids | Thu 18 Dec '03 |
| 110 | Technology Of Kitty Hawk | Wed 17 Dec '03 |
| 109 | Failed Inventions | Wed 10 Dec '03 |
| 108 | Sports Cars | Thu 04 Dec '03 |
| 107 | Tailgating | Wed 03 Dec '03 |
| 106 | Wheel Estate | Wed 03 Dec '03 |
| 105 | Rolls-Royce | Tue 02 Dec '03 |
| 104 | Extreme Gadgets | Tue 02 Dec '03 |
| 103 | B-52 | Fri 28 Nov '03 |
| 102 | The Technology of Lewis and Clark | Thu 27 Nov '03 |
| 101 | Million Dollar Cars | Wed 26 Nov '03 |
| 100 | ET Tech | Tue 25 Nov '03 |
| 99 | Guns of Infamy | Mon 17 Nov '03 |
| 98 | Extreme Trucks | Wed 12 Nov '03 |
| 97 | Guns of the Sky | Fri 07 Nov '03 |
| 96 | Shipyards | Wed 05 Nov '03 |
| 95 | Inviting Disaster 4 | Tue 04 Nov '03 |
| 94 | Inviting Disaster 3 | Tue 04 Nov '03 |
| 93 | FBI's Crime Lab | Wed 29 Oct '03 |
| 92 | Inviting Disaster 2 | Tue 28 Oct '03 |
| 91 | U-Boats | Sat 25 Oct '03 |
| 90 | Panzers | Wed 22 Oct '03 |
| 89 | The Luftwaffe | Wed 22 Oct '03 |
| 88 | Traffic | Wed 22 Oct '03 |
| 87 | Inviting Disaster 1 | Tue 21 Oct '03 |
| 86 | Lake Pontchartrain Causeway | Wed 15 Oct '03 |
| 85 | The Chunnel | Fri 10 Oct '03 |
| 84 | Smart Bombs | Tue 30 Sep '03 |
| 83 | Early Machine Guns | Fri 26 Sep '03 |
| 82 | Machu Picchu | Wed 24 Sep '03 |
| 81 | The Battleships | Wed 24 Sep '03 |
| 80 | The PT Boats | Wed 24 Sep '03 |
| 79 | Overseas Highway | Wed 03 Sep '03 |
| 78 | Avalanches: White Walls of Death | Wed 27 Aug '03 |
| 77 | Space Shuttle Columbia | Tue 26 Aug '03 |
| 76 | Landmines | Thu 21 Aug '03 |
| 75 | Metal | Tue 19 Aug '03 |
| 74 | The Gunboats of Vietnam | Mon 18 Aug '03 |
| 73 | Aircraft Carrier | Fri 15 Aug '03 |
| 72 | Bullets | Wed 13 Aug '03 |
| 71 | Terror Tech 3 | Tue 12 Aug '03 |
| 70 | Police Guns | Thu 07 Aug '03 |
| 69 | Big Rigs of Combat | Wed 06 Aug '03 |
| 68 | Military Movers | Wed 06 Aug '03 |
| 67 | Terror Tech 2 | Tue 05 Aug '03 |
| 66 | Loading Docks | Wed 30 Jul '03 |
| 65 | Terror Tech | Tue 29 Jul '03 |
| 64 | Convertibles | Thu 24 Jul '03 |
| 63 | Sandhogs | Wed 23 Jul '03 |
| 62 | Car Crashes | Wed 23 Jul '03 |
| 61 | 4x4 | Tue 22 Jul '03 |
| 60 | Breaking The Sound Barrier | Wed 16 Jul '03 |
| 59 | Logging Tech | Wed 09 Jul '03 |
| 58 | Fireworks | Wed 02 Jul '03 |
| 57 | More Engineering Disasters | Wed 02 Jul '03 |
| 56 | Engineering Disasters 4 | Wed 02 Jul '03 |
| 55 | Private Jets | Mon 30 Jun '03 |
| 54 | Battle Gear | Mon 30 Jun '03 |
| 53 | Gunslingers | Thu 26 Jun '03 |
| 52 | Dangerous Cargo | Wed 25 Jun '03 |
| 51 | High Voltage | Tue 24 Jun '03 |
| 50 | Million Dollar Guns | Sat 07 Jun '03 |
| 49 | The Exterminator | Tue 03 Jun '03 |
| 48 | Cosmodrome | Mon 26 May '03 |
| 47 | Torture Devices | Thu 22 May '03 |
| 46 | Motorcycles | Wed 21 May '03 |
| 45 | Harley-Davidson | Wed 21 May '03 |
| 44 | Tank Crews | Thu 15 May '03 |
| 43 | Non-Lethal Weapons | Thu 13 Mar '03 |
| 42 | T-34: Russian Victory | Sat 10 May '03 |
| 41 | MiG 15 | Sat 10 May '03 |
| 40 | The MiG | Fri 09 May '03 |
| 39 | U.S. Guns of World War II | Thu 08 May '03 |
| 38 | Ball Turret Gunners | Thu 01 May '03 |
| 37 | Machine Guns | Wed 30 Apr '03 |
| 36 | Farming Technology | Fri 25 Apr '03 |
| 35 | The Great Wall of China | Wed 16 Apr '03 |
| 34 | Secrets of the Acropolis | Thu 10 Apr '03 |
| 33 | The Tool Bench: Hand Tools | Tue 08 Apr '03 |
| 32 | Coal Mines | Wed 02 Apr '03 |
| 31 | Titanic Tech | Tue 01 Apr '03 |
| 30 | Machine Tools | Tue 01 Apr '03 |
| 29 | Big Rigs of Combat: Jeeps | Mon 31 Mar '03 |
| 28 | Japanese Guns of WWII | Wed 26 Mar '03 |
| 27 | Black Hawk: Night Stalker | Wed 26 Mar '03 |
| 26 | Remote Control | Tue 25 Mar '03 |
| 25 | Million Dollar Tech | Tue 25 Mar '03 |
| 24 | Army Corps of Engineers | Tue 18 Mar '03 |
| 23 | Space Stations | Fri 14 Mar '03 |
| 22 | Bullet Trains | Tue 11 Mar '03 |
| 21 | Apollo 13 | Tue 11 Mar '03 |
| 20 | Engineering Disasters 3 | Sat 08 Mar '03 |
| 19 | Firing Ranges | Wed 05 Mar '03 |
| 18 | Mackinac Bridge | Wed 05 Mar '03 |
| 17 | Twin Towers of the East | Tue 04 Mar '03 |
| 16 | Emergency Room | Thu 20 Feb '03 |
| 15 | Demolition | Tue 18 Feb '03 |
| 14 | Dynamite | Tue 18 Feb '03 |
| 13 | The Tackle Box | Wed 12 Feb '03 |
| 12 | Gadgets | Tue 11 Feb '03 |
| 11 | Camping Technology | Tue 11 Feb '03 |
| 10 | The Alcan Highway | Tue 11 Feb '03 |
| 9 | Booby Traps | Tue 04 Feb '03 |
| 8 | Winter Warriors | Fri 31 Jan '03 |
| 7 | Hunting Gear | Thu 30 Jan '03 |
| 6 | Ice Road Truckers | Thu 30 Jan '03 |
| 5 | Trans-Siberian Railroad | Tue 28 Jan '03 |
| 4 | Hangars | Mon 27 Jan '03 |
| 3 | Limos | Tue 07 Jan '03 |
| 2 | Castles & Dungeons | Tue 07 Jan '03 |
| 1 | Disaster Technology | Thu 02 Jan '03 |
| Season 9 |
| # | Title | Air Date |
| 112 | Office Wonders | Tue 31 Dec '02 |
| 111 | Pleasure Boats | Tue 31 Dec '02 |
| 110 | Big Rigs of Combat: Tanks | Mon 30 Dec '02 |
| 109 | Hardware Stores | Fri 27 Dec '02 |
| 108 | Video Games: Behind the Fun | Wed 25 Dec '02 |
| 107 | The Camera | Fri 20 Dec '02 |
| 106 | Private Planes | Fri 20 Dec '02 |
| 105 | War Planes of World War II | Wed 18 Dec '02 |
| 104 | Runways | Tue 17 Dec '02 |
| 103 | Bulletproof | Thu 12 Dec '02 |
| 102 | Chesapeake Bay Bridge & Tunnel | Thu 12 Dec '02 |
| 101 | Concept Cars | Tue 10 Dec '02 |
| 100 | Salt Mines | Thu 05 Dec '02 |
| 99 | More Gadgets | Thu 05 Dec '02 |
| 98 | Digi-Tech | Thu 05 Dec '02 |
| 97 | Commercial Jets | Mon 02 Dec '02 |
| 96 | More Bond Gadgets | Mon 02 Dec '02 |
| 95 | James Bond Gadgets | Mon 02 Dec '02 |
| 94 | Cattle Ranches | Fri 22 Nov '02 |
| 93 | The Maginot Line | Mon 18 Nov '02 |
| 92 | The Winchester | Fri 15 Nov '02 |
| 91 | The Colosseum | Fri 15 Nov '02 |
| 90 | West Point | Thu 14 Nov '02 |
| 89 | The M-16 | Thu 14 Nov '02 |
| 88 | Tunnels of Vietnam | Wed 13 Nov '02 |
| 87 | Garbage | Thu 07 Nov '02 |
| 86 | The Spitfire | Wed 06 Nov '02 |
| 85 | Siege Machines | Wed 06 Nov '02 |
| 84 | Drive-Thru | Fri 01 Nov '02 |
| 83 | Survival Technology | Fri 01 Nov '02 |
| 82 | High Tech Sex | Wed 30 Oct '02 |
| 81 | Secret Life of the Crash Test Dummy | Tue 29 Oct '02 |
| 80 | Train Wrecks | Mon 28 Oct '02 |
| 79 | War Games | Wed 23 Oct '02 |
| 78 | Bunkers | Tue 22 Oct '02 |
| 77 | Sherman Tanks | Tue 22 Oct '02 |
| 76 | The Manhattan Project | Mon 21 Oct '02 |
| 75 | The City Beneath Our Feet | Fri 11 Oct '02 |
| 74 | Quarries | Thu 10 Oct '02 |
| 73 | The Internet: Behind the Web | Wed 09 Oct '02 |
| 72 | More Earthmovers | Wed 09 Oct '02 |
| 71 | Cranes | Tue 08 Oct '02 |
| 70 | Forts | Thu 03 Oct '02 |
| 69 | Camouflage | Wed 02 Oct '02 |
| 68 | Monster Trucks | Tue 01 Oct '02 |
| 67 | Proving Grounds | Mon 30 Sep '02 |
| 66 | Home Tech | Fri 27 Sep '02 |
| 65 | The Tool Bench: Power Tools | Thu 26 Sep '02 |
| 64 | International Airports II | Wed 25 Sep '02 |
| 63 | Garage Gadgets | Wed 25 Sep '02 |
| 62 | Police Technology | Tue 24 Sep '02 |
| 61 | Banks | Fri 20 Sep '02 |
| 60 | Muscle Cars | Fri 20 Sep '02 |
| 59 | Drag Racing | Thu 19 Sep '02 |
| 58 | Great Inventions | Wed 18 Sep '02 |
| 57 | Gold Mines | Wed 18 Sep '02 |
| 56 | Pickup Trucks | Wed 18 Sep '02 |
| 55 | The Autobahn | Tue 17 Sep '02 |
| 54 | Times Square | Thu 12 Sep '02 |
| 53 | The Chrysler Building | Tue 10 Sep '02 |
| 52 | Security Systems | Fri 06 Sep '02 |
| 51 | Suez Canal | Thu 05 Sep '02 |
| 50 | The Pentagon | Thu 05 Sep '02 |
| 49 | Breweries | Fri 30 Aug '02 |
| 48 | Cemeteries | Thu 29 Aug '02 |
| 47 | Icebreakers | Thu 29 Aug '02 |
| 46 | Bridges | Wed 28 Aug '02 |
| 45 | Nuclear Subs | Wed 28 Aug '02 |
| 44 | Concrete | Wed 28 Aug '02 |
| 43 | Buses | Tue 27 Aug '02 |
| 42 | Magnets | Tue 27 Aug '02 |
| 41 | Hadrian's Wall | Mon 26 Aug '02 |
| 40 | Inventions of War | Fri 23 Aug '02 |
| 39 | Trucks | Fri 23 Aug '02 |
| 38 | The Junkyard | Thu 22 Aug '02 |
| 37 | The Magnum | Wed 21 Aug '02 |
| 36 | Axes, Swords and Knives | Tue 20 Aug '02 |
| 35 | Diamond Mines | Fri 16 Aug '02 |
| 34 | The London Underground | Thu 15 Aug '02 |
| 33 | Liberty Ships of WWII | Thu 15 Aug '02 |
| 32 | War Trains | Wed 14 Aug '02 |
| 31 | The Atlantic Wall | Wed 14 Aug '02 |
| 30 | Nordhausen | Tue 13 Aug '02 |
| 29 | Cannons | Fri 09 Aug '02 |
| 28 | Prisons | Thu 08 Aug '02 |
| 27 | Jet Engines | Thu 08 Aug '02 |
| 26 | The World's Biggest Machines | Wed 07 Aug '02 |
| 25 | Towing | Tue 06 Aug '02 |
| 24 | Casino Technology | Fri 02 Aug '02 |
| 23 | Death Devices | Thu 01 Aug '02 |
| 22 | Remote-Operated Vehicles | Mon 29 Jul '02 |
| 21 | Aswan Dam | Thu 25 Jul '02 |
| 20 | Power Plants | Thu 25 Jul '02 |
| 19 | Scuba and Deep-Sea Diving | Wed 24 Jul '02 |
| 18 | Engines | Wed 24 Jul '02 |
| 17 | Gasoline | Tue 23 Jul '02 |
| 16 | Codes | Mon 22 Jul '02 |
| 15 | Rescue Equipment | Fri 19 Jul '02 |
| 14 | Lost Marvels | Thu 18 Jul '02 |
| 13 | The F-14 | Wed 17 Jul '02 |
| 12 | Strategic Air Command | Tue 16 Jul '02 |
| 11 | Super Guns | Mon 15 Jul '02 |
| 10 | Combat Training | Tue 09 Jul '02 |
| 9 | The Big Dig | Mon 08 Jul '02 |
| 8 | Air Shows | Fri 05 Jul '02 |
| 7 | The Erie Canal | Fri 05 Jul '02 |
| 6 | Lighthouses | Wed 03 Jul '02 |
| 5 | Saloons | Wed 03 Jul '02 |
| 4 | Beach Technology | Tue 02 Jul '02 |
| 3 | Models | Thu 20 Jun '02 |
| 2 | Niagara Power | Wed 03 Apr '02 |
| 1 | Motors | Tue 26 Mar '02 |
| Season 4 |
| # | Title | Air Date |
| 21 | The Alaskan Oil Pipeline | Tue 04 Nov '97 |
| 20 | Deep Sea Exploration: Challenging the Abyss | Mon 03 Nov '97 |
| 19 | International Airports | Tue 28 Oct '97 |
| 18 | Earthmovers: The Power to Move Mountains | Mon 27 Oct '97 |
| 17 | Trans-Atlantic Cable: 2,500 Miles of Copper | Sun 26 Oct '97 |
| 16 | NORAD: The War Game Fortress | Sun 19 Oct '97 |
| 15 | The Stock Exchange | Sun 12 Oct '97 |
| 14 | Transcontinental Railroads | Sun 12 Oct '97 |
| 13 | The Search for the Polio Vaccine | Sun 05 Oct '97 |
| 12 | Forensic Science: The Crimefighter's Weapon | Sun 28 Sep '97 |
| 11 | Radar | Sun 21 Sep '97 |
| 10 | Household Wonders | Sun 14 Sep '97 |
| 9 | Great Towers in the Sky | Sun 07 Sep '97 |
| 8 | The Electric Light | Mon 01 Sep '97 |
| 7 | The Motion Picture | Mon 01 Sep '97 |
| 6 | The Phonograph | Mon 01 Sep '97 |
| 5 | Radio: Out of Thin Air | Sun 24 Aug '97 |
| 4 | Satellites | Sun 17 Aug '97 |
| 3 | The Great Wall of China | Sun 22 Jun '97 |
| 2 | Observatories: Stonehenge to the Space Telescopes | Sun 08 Jun '97 |
| 1 | Pyramids: Majesty and Mystery | Sun 23 Mar '97 |