Modern arsenals have become much more sophisticated than bullets and bombs. Discover microwave-like rays that make the enemy flee when they feel the heat, and laser weapons, mounted on trucks and airplanes that can blow missiles out of the sky.

Barbarians and technology, maybe they're not such a contradiction after all. It's the bow that nearly brought down Rome and the suspension system that revolutionized the chariot.

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.

Precision-guided munitions, smart bombs were the media buzz of the first Gulf War and a major military and political driving force of the second. But their apparent sudden celebrity is deceptive. The history of smart bombs goes back to World War I and includes an ingenious, if eccentric, group of inventions and a cast of characters that boasts a Kennedy and a president of General Motors. Join us for the underground history of smart bombs, and a glimpse into the future of precision weapons.

How do you stop a speeding bullet? From body armor to armored cars and trucks, we review the history of the race between the bullet and a successful way to stop it. It's not exactly easy to design material that can catch gunfire traveling up to 3,000 feet per second. We'll look at little-known advances like bulletproof layering hidden in walls, futuristic smart materials that "remember" how to stop a bullet, and a system that deploys a shield within milliseconds when it detects an oncoming round.

He who would become a surgeon should join the army and follow it," Hippocrates counseled nearly 2,500 years ago. In this history of medicine under fire, we see how a small army of medics, nurses, surgeons, stretcher-bearers, and ambulance drivers, races to keep pace with the deadly advances of war.

U.S. soldiers today face enormous challenges, often stationed in desolate locations behind enemy lines. Keeping them protected is priority number one.

Whenever a culture reaches a level of sophistication in literacy, science, and language, codes spring up spontaneously. As the social life of a community increases in complexity, the demands for private communication between two or more people inevitably lead to cryptology--a system of secret symbolic messages. We explore the rich history of communicating with secret symbols--from Egyptian hieroglyphics to Caesar's encrypted directives, from WWI and WWII codebreakers to cyberspace.

Modern arsenals have become much more sophisticated than bullets and bombs. Discover microwave-like rays that make the enemy flee when they feel the heat, and laser weapons, mounted on trucks and airplanes that can blow missiles out of the sky.

Barbarians and technology, maybe they're not such a contradiction after all. It's the bow that nearly brought down Rome and the suspension system that revolutionized the chariot.

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.

Precision-guided munitions, smart bombs were the media buzz of the first Gulf War and a major military and political driving force of the second. But their apparent sudden celebrity is deceptive. The history of smart bombs goes back to World War I and includes an ingenious, if eccentric, group of inventions and a cast of characters that boasts a Kennedy and a president of General Motors. Join us for the underground history of smart bombs, and a glimpse into the future of precision weapons.

How do you stop a speeding bullet? From body armor to armored cars and trucks, we review the history of the race between the bullet and a successful way to stop it. It's not exactly easy to design material that can catch gunfire traveling up to 3,000 feet per second. We'll look at little-known advances like bulletproof layering hidden in walls, futuristic smart materials that "remember" how to stop a bullet, and a system that deploys a shield within milliseconds when it detects an oncoming round.

He who would become a surgeon should join the army and follow it," Hippocrates counseled nearly 2,500 years ago. In this history of medicine under fire, we see how a small army of medics, nurses, surgeons, stretcher-bearers, and ambulance drivers, races to keep pace with the deadly advances of war.

U.S. soldiers today face enormous challenges, often stationed in desolate locations behind enemy lines. Keeping them protected is priority number one.

Whenever a culture reaches a level of sophistication in literacy, science, and language, codes spring up spontaneously. As the social life of a community increases in complexity, the demands for private communication between two or more people inevitably lead to cryptology--a system of secret symbolic messages. We explore the rich history of communicating with secret symbols--from Egyptian hieroglyphics to Caesar's encrypted directives, from WWI and WWII codebreakers to cyberspace.

Modern arsenals have become much more sophisticated than bullets and bombs. Discover microwave-like rays that make the enemy flee when they feel the heat, and laser weapons, mounted on trucks and airplanes that can blow missiles out of the sky.

Barbarians and technology, maybe they're not such a contradiction after all. It's the bow that nearly brought down Rome and the suspension system that revolutionized the chariot.

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.

Precision-guided munitions, smart bombs were the media buzz of the first Gulf War and a major military and political driving force of the second. But their apparent sudden celebrity is deceptive. The history of smart bombs goes back to World War I and includes an ingenious, if eccentric, group of inventions and a cast of characters that boasts a Kennedy and a president of General Motors. Join us for the underground history of smart bombs, and a glimpse into the future of precision weapons.

How do you stop a speeding bullet? From body armor to armored cars and trucks, we review the history of the race between the bullet and a successful way to stop it. It's not exactly easy to design material that can catch gunfire traveling up to 3,000 feet per second. We'll look at little-known advances like bulletproof layering hidden in walls, futuristic smart materials that "remember" how to stop a bullet, and a system that deploys a shield within milliseconds when it detects an oncoming round.

He who would become a surgeon should join the army and follow it," Hippocrates counseled nearly 2,500 years ago. In this history of medicine under fire, we see how a small army of medics, nurses, surgeons, stretcher-bearers, and ambulance drivers, races to keep pace with the deadly advances of war.

U.S. soldiers today face enormous challenges, often stationed in desolate locations behind enemy lines. Keeping them protected is priority number one.

Whenever a culture reaches a level of sophistication in literacy, science, and language, codes spring up spontaneously. As the social life of a community increases in complexity, the demands for private communication between two or more people inevitably lead to cryptology--a system of secret symbolic messages. We explore the rich history of communicating with secret symbols--from Egyptian hieroglyphics to Caesar's encrypted directives, from WWI and WWII codebreakers to cyberspace.