Season
- Season 1 1993-12-10
- Season 2 1994-12-16
- Season 3 1995-08-20
- Season 4 1996-09-02
- Season 5 1997-08-17
- Season 6 1998-07-27
- Season 7 2000-01-03
- Season 8 2001-01-08
- Season 9 2002-01-02
- Season 10 2003-01-01
- Season 11 2004-01-16
- Season 12 2005-01-05
- Season 13 2006-01-04
- Season 14 2007-01-17
- Season 15 2008-01-07
- Season 16 2010-01-14
- Season 17 2010-10-29
- Season 18 2011-10-03
- Season 19 2013-07-16
- Season 20 2021-02-20
- Season 21 2021-07-25
- Season 22 2021-11-28
- Season 23 2022-02-16
Season 23 Episode
- Season 8 Battle Gear.
- Season 8 Proving Grounds
- Season 8 Commercial Jets
- Season 8 Apollo 13
- Season 8 Survival Technology
- Season 8 Chesapeake Bay Bridge and Tunnel
- Season 8 Garage Gadgets
- Season 8 Construction Machines
- Season 8 Hadrian's Wall
- Season 8 Monster Trucks.
- Season 8 Lighthouses
- Season 8 Computers
- Season 8 Engineering Disasters 3.
- Season 8 Chemical And Biological Weapons
- Season 8 International Airports II
- Season 8 Codes.
- Season 8 The M-16
- Season 8 The Colosseum
- Season 8 The World Trade Center
- Season 8 Hardware Stores
- Season 8 Saloons
- Season 8 More Gadgets
- Season 8 Cattle Ranches
- Season 8 Cannons.
- Season 8 Nuclear Subs
- Season 8 Air Shows
- Season 8 West Point
- Season 8 Quarries.
- Season 8 Diamond Mines
- Season 8 The House
- Season 8 Work Clothes
- Season 8 Bunkers.
- Season 8 Cemeteries.
- Season 8 War Games
- Season 8 Drive-Thru
- Season 8 Times Square
- Season 8 Los Angeles
- Season 8 Glass
- Season 8 Firing Ranges
- Season 8 The St. Louis Arch
Modern Marvels - Season 8 Episode 24 Cannons.
7.97 44 minutes Cannons have fired balls of iron and atomic bombs, changed the way wars are fought, and now come equipped with smart weapons. Beginning with 13th-century cannons that were designed to penetrate forts of the day, we'll see how cannons were first cast and later forged, and show how large cannons terrorized civilians and soldiers in WWI and WWII. Moving to the present, we feature the 40-ton self-propelled Crusader that launches 100-pound steel artillery shells more than 33 miles.
