It fell to geneticists to reveal the answer.
Genetic testing on archeological evidence revealed that the best resolution favors modern humans evolving in Africa, migrating out of the Continent at 200,000 B.C. This puts to rest the decades long fight between two intellectual camps.
The late great Paleo-anthropologist Dr. Mary Leakey (1913-1996) discovered several bone and skull fragments of our earliest known ancestor named Australopithecus, a hominoid with a larger cranium but smaller jaw.
She found these fragments in a ravine in Tanzania, a place called Olduval Gorge (ariel picture)