China, as we know it today, would not exist without the Han Dynasty. About two millenniums ago, its emperors ruled for over 400 years, and yet, few visible remains of this period exist above ground. Underground, however, it's a different story. Join a team of archaeologists as they enter the royal tombs of three emperors spanning the reign of the Han Dynasty. By excavating these sites, they hope to further our knowledge of their wealth, their beliefs, their quest for immortality, and how their culture and philosophy shaped modern China.

Raiders of the Jade Empire

Big numbers of polar bears come to the same spot in Alaska at the same time every year.

The Great Polar Bear Feast

In China's Valley of the Kings, there stands a tall, carved stone. It honors the resting place of a woman named Wu Zetian, who rose from concubine to become China's only female emperor. For more than a millennia, history claimed she killed her own children, held power through a ruthless rule of terror, and brought China to the edge of ruin. But are any of these claims true? Join the investigation as we revisit old evidence and reveal new truths, using artifacts and forensic tools to tell the true story of China's Emperor of Evil.

China's Emperor of Evil

In the early years of TV, from its invention in the 1920s until the mid-'60s, most shows were broadcast in black and white before color TV gained in popularity and become economically viable for broadcasters. That means many historic pieces of video -- including rare home movies of President Franklin D. Roosevelt, the attack on Pearl Harbor and the Nixon-Kennedy debate -- have all been relegated to being viewed in the colorless format. "America in Color" looks to change that by restoring and colorizing archival footage from the early 20th century through the '60s. Producers meticulously researched the original colors to make sure the tones are correct when they use revolutionary methods to add the proper hues to footage. Each episode of the hourlong series highlights newly restored footage from a specific decade in the history of the medium.

America in Color

Take a cross-country flight over Ireland's natural wonders and ancient ruins. In this spectacular overview of the historically significant Emerald Isle, we soar over Neolithic tombs of the Celtic era, medieval castles of the Vikings, and modern cities humming with life. From the tower that inspired a novelist to the ancestral home of a famous stout, we explore the sites, the people, and the milestones of this unique gem of Western Europe.

Aerial Ireland

Stunning new archaeological evidence provides clues about the Egyptians who built the Great Pyramid of Giza--and how they did it. Join researchers as they delve into the logbook of a work crew and discover how the massive project transformed Egypt.