National Geographic Inside The Pentagon

If you haven't heard of Plant 42, you are not alone. Go inside America's “black world” of off-the-record projects developed in secret. Host Jake Ward, editor of Popular Science, explores the little-known projects still being built in America that are so confidential, some are said not to exist. His mission: to shine a light on the covert technology hidden all around us.

Lisa Ling goes undercover in North Korea for a rare glimpse of the secretive country, and reports on dictator Kim Jong-un creating international crises.

An exclusive, in-depth look into the events that led up to 9/11 by tracing the timeline from al Qaeda's earliest origins through the aftermath of 9/11 and the ongoing investigation.

The Vietnam War is told from start to finish as a first person military chronicle, through the raw, horrifying war as experienced by the men who fought it, believing they were there to win.

The events of the hajj have long remained veiled from non-Muslims, who are forbidden even to enter the holy city of Mecca. A team of Muslim filmmakers gained access to Islam's holiest place at the peak of the pilgrimage to document the holy event for National Geographic Television.

Go behind the scenes at Moscow's Circus School and experience the magic and wonder of the performances that delight millions. See lion tamers risk life and limb, trapeze artists glide through the air, of course, the beloved clowns who inspire imagination and fantasy. With laughter as their language, the Soviet Circus bridges the gap between generations, borders, and all peoples of the world.

Join National Geographic's Lisa Ling as she captures a rare look inside North Korea - something few Americans have ever been able to do. Posing as an undercover medical coordinator and closely guarded throughout her trip, Lisa moves inside the most isolated nation in the world, encountering a society completely dominated by government and dictatorship. Glimpse life inside North Korea as you've never seen before with personal accounts and powerful footage. Witness first-hand efforts by humanitarians and the challenges they face from the rogue regime.

Behind the high-tech offices and employees lurks Japan's Yakuza, killing, stealing and extorting.

With worries about the state of our national security increasing, the Federal Bureau of Investigation has been under more intense scrutiny than ever. This penetrating documentary offers high-security access behind the scenes at the FBI. Rare footage and interviews with agents combine to offer insight as to how the Bureau really operates.

A behind the scenes look at Google today. From Google's offices in China and Russia to the Googleplex (its Silicon Valley headquarters), uncover why this company's corporate philosophy and attitude is so unique among major companies today.

It's the most famous military installation in the world, yet it doesn’t officially exist. Area 51, a site for covert Cold War operations, has long been a magnet for crackpots, conspiracy theorists, and the overly curious. While there may not be truth to the rumors that Area 51 is a haven for UFOs and extraterrestrials, it's clear that our government has been up to something in Area 51 for decades, and it turns out there is a kernel of truth to even some of the wildest speculation. Now, after years of silence, for the first time Area 51 insiders spill their secrets and reveal what has really been going on inside the most secretive place on earth.