Megalodon. It was the biggest predator to ever swim the oceans of the world. For 20 million years, this ferocious 50-ton shark with a 7-foot jaw and seven inch teeth terrorized the creatures of the seas from Australia to South America and the coasts of North America. Not even the giant whales of the time were safe from this apex predator. Now, nearly 2 million years after Megalodon disappeared from earth, scientists will rebuild this monster shark.

Uncover the secrets behind the magnificent Parthenon, in an inside look at its $10 billion restoration. It was first used as a temple to Athena.

Salvage experts uncover notorious Black Sam’s loot, revealing many of the secrets of the real-life Pirates of the Caribbean. Sword-wielding sea bandits, a tragic fate and a sunken treasure. Follow the swashbuckling story of the world’s first excavation of a pirate treasure ship.

The Heilongjiang Acrobatic troupe, based in the city of Harbin, is one of China's most respected acrobatic groups. For over fifty years its performers have thrilled audiences throughout China with contemporary interpretations of this traditional art form. Two years ago, artistic director Mr. Guan Xin Min decided on a new and innovative direction for Heilongjiang, they would become the only acrobatics truope in China to perform on ice. Combining ice scaking and traditional acrobatics may be a great marketing tool, but it will take a team of ultra talented and dedicated performers to turn this idea into a reality. After training practices and performances, the Heilongjiang Acrobatic troupe is ready to take its unique style of ice acrobaics beyond mainland China. this is a tense and exciting time for all the yound performers, but will circustnaces beyond their control conspire to end this momentous endeavour before it even begins?

For the first time ever, we take an exclusive peek into the mysterious lives of the most secretive animals of the African Bushveld. We will expose the behaviors of these animals seldom, if ever, seen before as we delve into the shadowy existence of animals rarely seen, let alone captured on television. We will investigate seven enigmatic creatures - the serval, aardvark, pangolin, genet, African wildcat, civet and porcupine - as they furtively go about their top-secret activities. Each story will introduce us to one of these animals, and give us a privileged glimpse into their extremely private lives and their particular adaptations for life in the dangerous wilderness, where they battle against tremendous odds. We witness how each one cunningly outwits the super-predators in its own special way, with extra-sharp senses and other strategies for survival.

At four feet wide and 1,000 pounds, the killer pig was a prehistoric battle tank that dominated the North American landscape. Endowed with some truly unique bioengineering traits, the killer pig relied on its massive three-foot-long skull and binocular vision to catch its prey. Learn how the killer pig was an evolutionary success, despite its eventual extinction.

In the desert in southern Peru lies one of the greatest mysteries of mankind - the land of huge striated lines: animals, people, and geometric shapes are located in an area of hundreds of square kilometers.

Take a behind-the-scenes tour and gain insight into BMW's high-tech and innovative manufacturing plants as they create the sleek and stylish Z4 Roadster.

Go inside fire trucks mammoth 800,000 sq.ft. operation, where over 1,500 highly skilled workers mix muscle and high-tech tools to create made-to-order rigs in approximately 45 days.

The 300-bed Tulane University Hospital in New Orleans, Louisiana takes in patients from other hospitals during Hurricane Katrina. Relatives of the patients and others also arrive until there are over 2,000 people at the hospital. The hospital is being powered by emergency generators in the basement and has no running water. When the basement starts to flood after the hurricane, the decision is made to evacuate. The patients, staff and everyone else are airlifted from the hospital's car park roof by helicopter.

The Rio-Antirio bridge is a cable-stayed bridge near Patra on the Peloponnese, linking the towns of Rio and Antirrio on the western mainland Greece, thus connecting with the rest of Europe. The bridge dramatically improves access to and from the Peloponnese, which could previously be reached only by ferry or via the isthmus of Corinth at its extreme east end. It has a length of 2252 m (2882 m including the access bridges); as it consists entirely of five cable-stayed spans and four pylons, and it is one of the world's longest cable-stayed suspended decks. Its width is 28 meters -- it has two vehicle lanes per direction, an emergency lane and a pedestrian walkway.