Discovery Channel Features

Unsolved History unravels the secrets behind the world's most valuable diamonds.

A Navy Seal is on a mission to find the world's most sinister weapons.

A Navy Seal is on a mission to find the world's most sinister weapons.

Track DNA evidence that shows how all humans may have come from one place. Follow the path from Africa and the Middle East into Asia. Forensic evidence proves that humans may all have come from the same genetic mother.

Track DNA evidence that shows how all humans may have come from one place. Follow the path from Africa and the Middle East into Asia. Forensic evidence proves that humans may all have come from the same genetic mother.

Viewers watch as three individuals in search of their dreams are forced to confront their worst nightmares. Chris Houser, Baltimore City police officer, Joan Murray, bank executive and passionate skydiver, and Trevor Snowden, professional snowboarder.

"Understanding: Extraterrestrials" reveals what NASA missions have discovered about other worlds, and compares popular culture's depictions of aliens with the theories of scientists.

Enter the extreme world of skydivers, big wave riders and wing walkers to discover what pushes these thrill-seekers to the limits of human endurance. Experience the adrenaline rush and learn the vital role this behavior plays in human culture.

Examine clues to the lives of ancient societies from the most awesome of man-made structures. From religious rites of the Egyptians to chilling sacrificial practices of the Mayans and Aztecs, explore the pyramid's pivotal role in civilization.

What makes some people superstars? Why do we chew faster when there's music in the air? How does sunshine provide pleasure, cure depression or change molecules to Vitamin D? These and other answers begin to explain human beings.

The anatomy of shark bites, tiger bites and bear attacks- all predators with businesslike teeth, capable of shredding human flesh. This featured assassin sports fangs as well, with lethal venom ejected from them that fells even the largest prey.

Soldiers recall being trapped behind enemy lines during the first major battle of Desert Storm.

In an age when cosmetic surgery has become so popular, more people are choosing to have multiple, costly and potentially dangerous procedures performed in just a few years. Find out what drives this need for surgical improvement.

In every conflict since World War II, the Navy's aircraft carriers have been the United States' ambassador of naval might. Examine these vessels, their crews, and the incredible arsenal they carry, including the aircraft that call these flat-tops home.

Hear the story of exceptional character who meet, endure, and conquer the challenge of a stress-filled, dangerous existence, locked inside the world's most lethal weapon - a nuclear powered ballistic submarine; a boomer.

Alaska is a land of extremes -- the biggest, coldest, windiest, wildest. Its climate and land forms are shaped by two oceans, the moving earth and frozen polar air. Through it flows the Yukon River, perhaps North America's last untamed river.

Ancient myths are full of larger-than-life men of grand stature. But new evidence brings forth the question - were the stories true?

The process of separating conjoined twins can be an incredibly complex and challenging endeavor.

If we could trap the sun's energy on Earth for one day, we could satisfy humanity's power needs for 30 years. With a core heat of 30 million degrees and giant flares that can be even hotter, the sun is the power plant of our solar system.