According to the American Society of Civil Engineers, the aging U.S. infrastructure is in danger of collapse. Learn about a company in Missouri that uses a trench-less technology to rebuild corroded sewer pipes from the inside out while engineers at General Motors Proving Grounds lead the battle against corrosive road de-icing salts. See how a bioreactor in Florida turns mountains of garbage methane gas. Finally, discover how the tiny termite is teaching us how to turn agricultural waste into ethanol at a fraction of the current cost.

Most people believe zombies are a recent phenomenon that grew out of comic books, movies and TV. The truth is very different. This two-hour special explores the real story of zombies beginning at the dawn of civilization and continuing right through to today. The first written reference to zombies can be found in the Epic of Gilgamesh, mankind's oldest work of literature. A look at both the old and new testaments of The Bible reveal numerous stories of the undead. We'll detail how Europe's Black Plague became one of the most prolific periods for myths and legends about zombies. Find out why Viking legends believed zombies were nearly indestructible except by decapitation or immolation. Examine other zombie legends from around the world, including secret stories of China's Terra Cotta Warriors and the voodoo rituals of Haiti. See how modern science added a whole new twist on zombies beginning with Mary Shelley's Frankenstein.

Albert Einstein's letter to FDR urged the development of an unthinkably powerful new weapon. The result, known as the Manhattan Project, brought government and science together to build a bomb that would change the world forever.

At its pinnacle, the British Empire spanned every continent and covered one quarter of the Earth's land mass. Through the centuries, the rulers of this enormous powerhouse used extraordinary engineering feats to become an industrial and military titan, loaded with riches. Some of their many pioneering accomplishments include the world's first locomotive, a superhighway of underground sewers, the imposing and grand Westminster Palace, and the most powerful and technically advanced navy in the age of sail. Using cutting edge CGI, we'll take a look at the key leaders of the British Empire--and explore the mark each left on society. Peter Weller hosts.

For over 4000 years, the world's greatest empires have come and gone--only China has survived the test of time. Century after century, China's regal emperors mobilized immense peasant armies to accomplish engineering feats unparalleled in human history. Among the groundbreaking innovations were the world's longest canal and a naval fleet mightier than all those of Europe combined. However, none can compare to the colossal 4,000-mile wall that stands as the most ambitious construction project ever built. From such heights came spectacular death spirals, as dynasty after dynasty, consumed by vanity and greed was stripped of power by the people it had ruled. Peter Weller hosts.

In Pennsylvania, our movers must lift an historic 1938 diner out of a building that has covered it for more than 50 years. But moving the cherished landmark unscathed will pose quite a challenge for everyone involved. Meanwhile, a determined mining historian must rescue a gigantic 1923 steam shovel that has been hidden high up in the Colorado Rockies. Will 30 years of sludge and rugged terrain stop this move before it even begins?

The world's oceans are graveyards for some of the greatest ships ever built. During the mid-1500's the English warship Mary Rose was sunk by a French cannon. Finally, more then 400 years after it sank, its massive 580-ton hull would be raised from its watery grave. In the Baltic Sea the 17th century warship, The Vasa, was heralded as the greatest ship ever built at that time, but on the day of her maiden voyage she sank. After early salvages failed, our team spent more than a year battling dangers to raise her to the surface. When the huge French liner Normandie capsized in New York Harbor, it created a deadly toxic cesspool. The team along with the Navy Salvage Service pulled off the dangerous mission of bringing her back up. At the end of WWII in the shallow area of Scapa Flow a captured German Admiral gave the orders to scuttle 72 ships. Experts said they could never be raised. One man proved them wrong and raised 28 of them.

The Denver International Airport is the largest airport in America. Its famous white peaked fabric roof spans a million-and-a-half square feet. Moving it would seem impossible--but not for this crew! Next the TWA terminal at JFK International Airport has to be moved nearly a quarter-mile. Walls of glass on this 800-ton building could topple like a house of cards. Watch the crew use an array of new technology and the most heavy-lift equipment ever amassed for a move.

Investigate the fascinating truths behind Dan Brown's (The Da Vinci Code) first novel. From centuries-old secret societies to real-world cryptography, from the high-stakes intrigue surrounding the installation of a new Pope to the sometimes uneasy relationship between the Vatican and leading scientists, this special will thrill and inform viewers about this monumental time in world history. The clues Brown's hero Robert Langdon follows in frantic pursuit of the Illuminati will inspire further investigation--into religious conspiracies and the Freemasons, secret "codes" hidden in Roman architecture and artwork--as well as controversial theories about religious iconography. Features scenes from the new movie as well as interviews with renowned symbologists, art historians, religious scholars, scientists and other experts will help unravel the mysteries and expose the diabolical plot to destroy the Church.

It is America's most private organization with secretive meetings and a membership that includes the most powerful men in America--and the world. But behind this elite brotherhood... are secrets. This episode explores the secret history, rituals and reach of the most well-known secret society in the world. How did the Freemasons shape America? What goes on at Freemason meetings? What secrets ceremonies and rituals are still conducted today? What is the meaning of Freemasonry symbols like the eye, the square and the compass? Are the Freemasons part of a New World Order with plans to control the world? For centuries, the Freemasons have been thought to be the architects behind the world's greatest international conspiracies. But more elusive than the organization itself--are its secrets. Secrets that have remained untold...until now.

An inside look at the secret protocols, elite security and hidden history of the world's most public of private residences. What is the most secret room in the White House and what makes it so powerful? What secret visitors have been to the White House--invited or not? What kind of background checks are needed to work at the White House? What security measures go into effect if the White House is under attack? For over 200 years, the White House has functioned as a Presidential residence, Executive Office and national command center. But more guarded than the White House itself--are its secrets. Secrets that have remained untold...until now.

As head of the powerful 15th-century Florentine family, Lorenzo de' Medici was the ultimate Renaissance man. The leadership of Lorenzo and his family created an atmosphere of culture, sophistication, and wisdom that enabled Leonardo da Vinci, Michelangelo, and Botticelli to flourish artistically. Just as skilled at politics, the wealthy Medici ruled Florence for centuries without holding an office. Their power to bestow and withhold favors made them feared and revered, loved and hated. On April 26, 1478, a gang of men repeatedly attacked Lorenzo and his brother Giuliano with knives in the Duomo cathedral during high Mass. Giuliano died, but a wounded Lorenzo survived. For centuries, historians believed the Pazzi family, Medici banking rivals, were at the center of the complex plot. Now, Dr. Marcello Simonetta, a historian at Wesleyan University, offers a shocking twist. Did the Pazzi Conspiracy include a much broader range of perpetrators, reaching all the way to the Vatican?

Informational programming.

Informational programming.

Informational programming.

Informational programming.

In 1944 in Brussels, the Gestapo loaded 1,500 prisoners on a train bound for Germany and almost certain death. Among them were Allied invaders and Resistance workers. But the Resistance foiled Nazi plans and prevented the train's departure. We talk to survivors and former Resistance members at a 1999 Comet Line Reunion in Brussels.

The exciting story of the search for mummies of an obscure Peruvian Andean culture called the Chachapoya, who thrived between 700 and 1500 AD before being wiped out by the Incas and Spaniards. The Chachapoya revered their ancestors and placed their mummified corpses in impressive tombs high on cliff walls. Keith Muscutt, Assistant Dean of the Arts at University of California, Santa Cruz, and climbers Herb Laeger and Richard Leversee eventually find the first unlooted tomb in modern times.

Travel to China to explore the roots of modern agricultural genius, where we will learn why these inventions were developed and how they have contributed to society today. Host Michael Guillen shows how the ancient Chinese invented advanced farming technology. He explains how the early planting tools: the hoe, the wheelbarrow and the cast iron guan plow revolutionized agriculture. We see a model of the Chinese seed drill which multiplied planting efficiency by a factor of ten and visit the Dujiangyan Irrigation Project which was engineered to control floods and irrigate farmland 22 centuries ago.

On August 27th, 1883 a series of blasts on the island of Krakatoa culminated in a colossal explosion that blew the island apart in one of the largest eruptions in recorded history. We explore the underground forces that led to this extraordinary explosion that killed over 36,000 people and the devastation that it caused. But this is not just history because Anak Krakatoa (the Son of Krakatoa) is growing bigger and bigger and will blow again.