The earth does not easily yield its secrets. Yet around the world scientists are unraveling the compelling story of human evolution. It is a saga that blends the rigors of science with the romance of a detective story. We have only traces that hint at who our ancestors were and how they may have lived. It is like a gigantic puzzle with most of the pieces forever missing. Today, biological scientists may quibble over the details of evolution, but they all agree that evolution is a fact. Animal studies now shed light on why some distant ape like creature became an upright walker and how it may have confronted the perils of life on open ground. Once barely noticeable on the landscape, humans would come to dominate the earth. The tool, mother of all inventions, was a key to our success. Tools chipped from stone helped bring us to where we are today. Now new tools help us better understand what paths we may have traveled along the way. Much of our current knowledge our understanding of who we are and where we came from has come about only in the last 30 years. Can we reconstruct the past? Can long silent voices be summoned across the vast reaches of time? Join us as we probe the MYSTERIES OF MANKIND.