Travel through the ages to witness the advancement of life on Earth—from the big bang and the earliest life-forms, to artificial intelligence and human cloning. Follow a team of scientists on an exciting expedition to uncover the secrets of the Oviraptor dinosaur. Find out why unique societies all over the world—along with many endangered plants and animals—are on the brink of extinction. See how the recent explosion of global population may be changing our climate and how we could soon witness the most devastating natural disasters of our time. Experience how yesterday's science fiction fantasies are fast becoming tomorrow's reality as National Geographic takes a fascinating look at where we came from and where the next millennium may take us in 2000: AMAZING MOMENTS IN TIME. Narrated by John Lithgow.