An article published in the journal “Nature” reports the results of an analysis of modern humans’ mitochondrial DNA to reconstruct the Homo sapiens family tree. A team of researchers led by Eva Chan of the Genomics and Epigenetics Division of the Garvan Institute of Medical Research and the University of New South Wales made a complex genetic analysis concluding that the modern human species emerged about 200,000 years ago in today’s Botswana, near the Zambezi River.