I finally found online this show I once watched that blew me away. It gives a pretty convincing scientific explanation about where human civilization began and the path of migration it took to populate the globe.
Journey of Man is a show that educates its viewers with science that is easy to understand. What'll blow you away is the eye-witness; when you see two persons on different continents with the same gene and similar facial features, you figure there must be something to this amazing discovery.
If I recall, the genetic scientist traces an abnormal gene around the globe and from that is able to put together a path that early man took in his long migration and evolution.
Watch, Witness and Wise Up; We are all from the same seed: