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Saved by the Sun
Is it time to take solar energy seriously?
Saving the National Treasures
Restorers take on the preservation of the original Declaration of Independence, Constitution, and Bill of Rights.
Search for a Safe Cigarette
The tobacco industry's quest for a "safer" cigarette is filled with promise and pitfalls.
Search for the Lost Cave People
Caves lining a rugged canyon deep in the Chiapas jungle hold clues to the little-known Zoque people.
Secret of Photo 51
Meet Rosalind Franklin, the unsung heroine behind the discovery of DNA's double helix.
Secrets, Lies & Atomic Spies
NOVA looks back to the 1940s, when American spies passed their country's deepest scientific secrets to the Soviets.
Secrets of the Crocodile Caves
Rare lemurs and crocodiles with bizarre cave-dwelling behavior draw scientists to a remote corner of Madagascar.
Secrets of Easter Island
A team attempts to recreate the original islanders' success at moving and erecting giant moai statues.
Secrets of Lost Empires II: China Bridge
Two teams working from opposite sides of a turbulent river attempt to build a 12th-century Chinese bridge.
Secrets of Lost Empires II: Easter Island
How did the ancient Easter Islanders move and erect giant stone statues? Our team tests one theory.
Secrets of Lost Empires II: Medieval Siege
Two teams set out to build precise replicas of a fearsome medieval weapon—the trebuchet.
Secrets of Lost Empires II: Pharaoh's Obelisk
Experts take on the challenge of raising a 40-ton obelisk without using modern technology.
Secrets of Lost Empires II: Roman Bath
NOVA sets out to create a working Roman bath, complete with hot tubs and underfloor heating.
Secrets of Making Money
With a radically redesigned bill, the U.S. Treasury fights back against a new breed of counterfeiters.
Secrets of the Mind
Neuroscientist V.S. Ramachandran's intimate encounters with his patients reveal a novel picture of the brain.
Secrets of the Parthenon
How did the ancient Athenians build this near-flawless icon of Greece's golden age?
Secrets of the Samurai Sword
Examine the thousand-year-old art and science behind the making of a Japanese warrior's key weapon.
What makes a person male or female? Can you be both? Explore the complex world of gender identity.
Shackleton's Voyage of Endurance
Beginning in 1915, Sir Ernest Shackleton and 27 men survive a year and a half lost in the Antarctic.
Sharks are known as the "perfect predators," but sometimes they slip up and attack the wrong prey—people.
Sinking City of Venice
Experts struggle to save the City of Canals before it vanishes beneath the waves.
Sinking the Supership
The tragic WWII story of the Yamato, the largest battleship ever built.
Space Shuttle Disaster
An investigation uncovers the human failures and design flaws behind the 2003 Columbia tragedy.
Special Effects: Titanic and Beyond
NOVA goes behind the scenes in Hollywood, where the art of illusion meets the science of perception.
Spies That Fly
A new generation of pilotless planes fly, spy, and bomb in places too risky for human pilots.
Top-secret documents rewrite the history of the famous satellite and the early space race.
The Spy Factory
Examine the high-tech eavesdropping carried out by the National Security Agency and the pitfalls of surveillance in an age of terrorism.
Stationed in the Stars
NOVA examines the International Space Station, the largest construction project ever undertaken in orbit.
Storm That Drowned a City
Experts and eyewitnesses reconstruct the devastating floods that Hurricane Katrina unleashed on New Orleans.
Submarines, Secrets and Spies
Explorer Robert Ballard, discoverer of the Titanic, investigates the wrecks of two Cold War-era nuclear submarines.
Sultan's Lost Treasure
Archeologists salvage more than 12,000 pieces of Chinese porcelain from an ancient shipwreck.
Engineers solve a unique set of problems in safety, aesthetics, and cost as they build a bridge over the Mississippi River.
Engineers, pilots, and others who knew Concorde tell its remarkable story.
The race to build the world's first supersonic passenger airliner leads to a massive Cold War espionage effort.
Molecular biologists, immunologists, geneticists, and physicians pool their expertise in search of an AIDS vaccine.
A team of doctors and climbers on Mt. McKinley investigate the body's ability to maintain its core temperature in sub-zero weather.
NOVA follows seven Harvard Medical School students for 13 years to see what it takes to become a fully qualified doctor.