They dated the oldest cluster of mtDNA types with no modern African representation to between 90,000 and 180,000 years ago. These populations might have left Africa at about that time, but the mtDNA data could not determine exactly when the descendents of Eve left for other far distant continents around the globe.
What is really compelling is how that flies in the face of conventional thinking about evolution. If evolution created men and women, then there would be dozens if not hundreds of Eves scattered around the globe at our humble beginnings. Australia, as a far separate continent, would surely have evolved from its own version of Eve, but no. As humans evolved from apes, this would occur all over the globe concurrently, not just in one place in Africa. That indicates that suddenly, a unique couple were just placed on the earth.
While most would assume that God did this directly, the shaman account as well as that told by hundreds of native legends, is that aliens, such as the Sirians or Siriuns, cross-bred with or genetically modified apes to acquire voice and cognitive thinking in the new humans that sprang from the missing link in the evolution theory. These "Sky People" as they are called, were the Gods who created human beings. Even the Egyptian God Osiris was an alien from Sirius.
The funny part of this truth is that ALL Americans are truly African-Americans, including every member of the all white KKK!