Across the ages and regardless of geography, in everything that really matters, it bears repeating that we are all members of a SINGLE human family--a family of intrepid adventurers who have been exploring the world in one form or another for the best part of a million years.18 In the course of this long odyssey we've moved so far apart, across oceans, over mountains, and to the opposite ends of jungles, deserts, and ice caps that we've forgotten how closely related we in fact are. In this sense, like the simple human message of the burials, the message of genetics also speaks to a hidden unity within our apparent diversity--and sometimes in ways that defy our expectations.