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Relive two legendary expeditions—one tragic, one triumphant—to pioneer a route through the Northwest Passage.
Balloon Race Around the World
Delve into the history and science of ballooning, and follow some of the attempts in the '90s to be the first to circumnavigate the globe.
Cracking the Maya Code
The story behind the centuries-long decipherment of ancient Maya hieroglyphs
A team of doctors and climbers on Denali test the body's response to extreme cold.
Descent Into the Ice
A team of "glacionauts" ventures into a labyrinth of unexplored and hazardous glacier caves on France's Mt. Blanc.
Take a virtual climb of Mt. Everest through panoramic photography and explore the personalities, dangers, and history associated with the mountain.
Extreme Cave Diving
A team of intrepid scientists journey into one of Earth's most dangerous and beautiful underwater frontiers.
In remote mountains of China, experts find clues to the origins of Earth's most stunning plants.
Hitler's Sunken Secret
An expedition to the bottom of Norway's Lake Tinn illuminates Nazi Germany's nuclear ambitions.
Archeologists from the Andes to the Alps and beyond learn about lost cultures from remarkably well-preserved human remains.
Into the Abyss
A daring expedition attempts to retrieve several "black smoker chimneys" from the seafloor a mile and a half down.
Island of the Sharks
Visit Costa Rica's Cocos Island, which boasts more sharks per cubic yard of water than perhaps any other place on the planet.
Lost City of Arabia
Helped by remote sensing, an expedition searches Oman's vast al-Khali desert for the lost city of Ubar.
Lost King of the Maya
Using ancient hieroglyphs and new excavations, archeologists investigate the rise and fall of the majestic city of Copan.
Lost Treasures of Tibet
A crack restoration team tries to prevent priceless medieval Buddhist murals from crumbling into dust.
Mountain of Ice
Jon Krakauer and fellow mountaineers pioneer a new route on a scientific expedition up Antarctica's highest peak.
Mysteries of the Nile
Explore ancient Egypt through a stunning series of interactive panoramic photographs.
Mysterious Life of Caves
Toxic caverns teeming with strange life-forms spark a radical theory of how caves take shape.
Mysterious Mummies of China
Three-thousand-year-old mummies with long blond hair and blue eyes are unearthed in a remote Chinese desert.
NOVA investigates an all-consuming passion for orchids, nature's most highly evolved plant.
Journey back to the beginning of everything: the universe, Earth, and life itself.
Pyramids—The Inside Story
Wander through the chambers and passageways of the Great Pyramid and learn about the pyramid builders.
Search for the Lost Cave People
Caves lining a rugged canyon deep in the Chiapas jungle hold clues to the little known Zoque people.
Secrets of Easter Island
A team attempts to recreate the original islanders' success at moving and erecting giant moai statues.
Secrets of the Crocodile Caves
Rare lemurs and crocodiles with bizarre cave-dwelling behavior draw scientists to a remote corner of Madagascar.
Shackleton's Voyage of Endurance
Beginning in 1915, Sir Ernest Shackleton and 27 men survive a year and a half lost in the Antarctic.
Sultan's Lost Treasure
Archeologists salvage more than 12,000 pieces of Chinese porcelain from an ancient shipwreck.
A team of doctors and climbers on Mt. McKinley investigate the body's ability to maintain its core temperature in sub-zero weather.
Titanic's Lost Sister
Underwater explorer Robert Ballard uses sonar technology to find the Britannic, a ship lost in the Aegean in World War I.
Treasures of the Sunken City
Divers search the seafloor for one of the seven wonders of the ancient world: the Lighthouse of Alexandria.
Underwater Dream Machine
Follow one man's quest to engineer a submarine with panoramic views.
The mysterious 1947 disappearance of an airplane high in the Andes en route from Argentina to Chile is finally resolved.
Viking Deception, The
Is the Vinland Map a priceless depiction of the New World made before Columbus's voyage or a 20th-century fake?
Recent discoveries paint a complex portrait of the Vikings and their boat journeys to places as far-flung as Istanbul.
Volcano Above the Clouds
Join a scientific expedition to the glacier-capped summit of Kilimanjaro, Africa's tallest mountain.
Voyage of Doom
Nautical archeologists uncover the wrecked ship of 17th century French explorer Robert Cavelier de La Salle.
Warriors of the Amazon
Explore the unique culture of the Yanomami, an isolated tribe living deep in the Amazonian rainforest.
Wilds of Madagascar, The
Scientists try to capture and study a catlike predator known as the fossa and an extremely rare lemur called the silky sifaka.