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Topic: Military & Espionage

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15 Years of Terror

From 9/11 to today’s crowd-sourced violence, trace how terrorists’ strategies have evolved.

Featured Content: Military & Espionage

Ground-Penetrating Radar Reveals Military Structures Buried Beneath Alcatraz Penitentiary

Hitler’s Secret Weapon

Military + Espionage

Explore Topic: Military & Espionage

A blueprint of a revolutionary war era submarine

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Design of a Revolutionary War–Era Combat Submarine

a man stands in an open field in front of a revolutionary war cannon

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Cannon Physics

How Deadly Was the Musket?

The World’s First Combat Submarine

Battle scene in sunlight

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Revolutionary War Weapons

Area 51: UFO Sightings and an Infamous Government Cover-Up

Is the Government Hiding Information on UFOs?