To understand who we are as a species, and why we vary as we do, we must examine our genetic diversity in the context of a common African origin, followed by intra- and intercontinental diasporas that transpired over a period of tens of thousands of years, culminating in an era of major migrations that reshuffled the worldwide human genetic construction over the past several thousand years and is still underway. Last, we must recognize that today's human population is far larger, more diverse, and more complex than it ever has been. We are all related, more than seven billion of us, recent cousins to one another, and, ultimately, everyone is African.