Were the earliest humans in Africa? What was the basis?

Early Homo sapiens distributed all over the world and became extinct. The earliest Homo sapiens was discovered in Africa. There is no doubt that human ancestors came from Africa.

Although many fossils of ancient people and apes have been found in human history, today's science proves that all human beings in the modern world have an ancestor.

Spencer Wells, a geneticist of the National Geographic Society of the United States, finally found this human ancestor-scientific Adam by using DNA technology. This human ancestor was born in Africa about 60 thousand years ago. Today, his genes have spread to everyone on the earth. Chromosomes can explain the origin of all human beings on earth. However, the key to finding human ancestors is to find a "super ancestor". That is, people who have left genetic marks on many people. They are like branches, countless branches, which will eventually come down to one person. Geneticists can track them step by step along this tree until they find the ultimate apex-scientific Adam.

Gene technology can infer the age of scientific Adam. He was born in Africa about 60 thousand years ago. There is no doubt that he is not a prehistoric homo erectus or an ape-man, but a modern man.

So the answer is probably 50,000-70,000 years, and the first immigrants arrived in West Asia.