This series takes a fascinating new look at a very old universe. Fifty years after man first ventured into outer space, we examine the greatest secrets of the heavens. Each episode outlines how humans have explored the universe, and scrutinises the discoveries they have made.
Documentary explores the history of the Great Wall of China. At about 30 feet in height and 4000 miles in length, the Great Wall is one of the largest construction projects on the earth. Running from the northwestern arm of the Yellow Sea, to a point deep in central Asia, the Wall was originally intended to keep out invading nomads. The program uses recent archeological digs and restoration projects to reveal secrets that have remained hidden for centuries.
