Since 1884, Bigfoot has provoked controversy within the scientific community as the most-sighted mythical beast in the world. Is he real, or merely a popular legend passed on through the generations? Narrated by Leonard Nimoy.

This documentary profiles people who are living with the grave consequences of a changing climate, as well as the individuals, communities and scientists inventing new approaches to safeguard our children's future. Filmed across the U.S., Asia and South America, this program brings the reality of climate change to life and offers viewers a variety of ways to make a difference in their own communities

"Korea is often called America's forgotten war, yet history tells is that almost 150,000 American servicemen were either killed or wounded during this "police action." In this collection of newsreels and U.S. Government footage, you wil relive America's experiences in Korea from the earliest days of intervention in 1950 to the signing of the Armistice in 1953." -- on contaier insert

Documents the rise and growth of Islam throughout the world, from the birth of Prophet Muhammad in the 6th century through the peak of the Ottoman Empire 1000 years later. Discusses the impact of Islamic civilization on world history and culture

Petra, a stone city of temples and tombs carved deep into stark cliffs in Jordan, was the center of life two thousand years ago for a people called the Nabateans. Archaeologists excavate evidence of a highly sophisticated society and discover answers to questions about Nabatean beliefs, customs, and destinies.

"With their agile little hands, raccoons have become the urban bandits we love and hate. In the past 70 years, their population has exploded in North American cities, and interaction with humans is making them smarter -- maybe even pushing them down a new evolutionary path. Using high-definition, infrared cameras that turn pitch dark into daylight, The Nature of Things achieves something that has never been done before: it intimately follows a family...

With exclusive access to one of the most important discoveries of modern times, National Geographic uncovers the secrets of the largest hoard of Saxon Gold ever found. Lost Gold of the Dark Ages chronicles the story of an amateur metal-detecting enthusiast who discovered a gold hoard dating back a millennium and valued at over $5 million. Also includes 'Secrets of the Lost Gold': a fascinating quest to reveal the hidden secrets of the 3,500 piece...

Features original location cinematography in 25 countries, taking the viewer around the world on an incredible journey from ancient Mesopotamia to modern Tibet.

Hummingbirds are the tiniest of birds, yet they are some of the toughest creatures on the planet. Using cameras able to capture over 500 images a second, the hummingbirds' magical world can finally be seen and appreciated. Nature reveals their stunning abilities as they have never been seen before. Narrated by F. Murray Abraham.

CNBC goes inside Google for a behind-the-scenes look at the company that created the world's most popular internet search engine.