Watch Explorer Season 2007 Full Episodes

Christian residents are caught in the crosshairs of a growing Islamic fundamentalism and the entrenched Israeli fortress that surrounds the...

Vipers have been evolving their way to the top of the reptile heap for millions of years. Their venom is lethal and they can strike with precision in...

Follow the global black market in body parts, from transplant surgeries in America to eager "donors" in India to China where executed prisoners'...

Heroin is one of the most addictive drugs on earth. Stronger, purer and easier to get than ever before, heroin is attracting a whole new breed of...

What caused the sudden mass extinction of mammoths 13,000 years ago? Clues point to the biggest cosmic impact humans have ever witnessed.

Did you know babies can learn languages and even grasp math? Explore the remarkable plasticity of a baby's brain and see how early experiences...

Ultimate Crocodile: Saltwater crocodiles are one of the most successful predators the world has ever seen. They out-lasted the dinosaurs with a 200...

With 400 breeds and counting, the dog is more varied in size and behavior than any other species. Follow man's evolutionary manipulation of dogs'...

It has no bones, blood or brains, but the jellyfish has survived in our oceans for more than 500 million years. Now, its numbers are exploding. Why?

NGC takes you inside the perilous world of one of America's most elite law enforcement agencies, offering a rare glimpse of their investigative...

What really happens when 30 million volts of electricity charges through your body and you survive being struck by lightning? Now, meet survivors who...

The Aryan Brotherhood is a secretive criminal gang that began inside California's maximum-security penitentiaries and expanded rapidly into dozens of...

Volcanologists make a stunning discovery when they dive into one of the largest, yet most mysterious, natural calamities in human history: the...

Cross into North Korea, one of the world's most secretive nations, for a rare glimpse of the country and its absolute dictator Kim Jong II.

The world's first MRI scan of a great white shark reveals the extreme engineering and hunting abilities of one of nature's most perfect predators.

For up to $600 a day, private security contractors in Iraq's war zone risk their lives to protect VIPs and transport critical supplies. See how these...