The origin of humanity on the globe is very hotly debated issue today. Now with the emergence of many branches of science, this issue is investigated from different angles and aspects. Earlier archaeology was only the tool to ascertain the antiquity and origin of human beings on the various parts of globe. In the light of new researches into various sciences, the present authors attempt to revisit and re-examine the available data of confronting views put forth by different scholars and historians. This attempt may help ascertain the origin and expansion of human beings on the globe without any prejudices and pre-conceived notions. The data mainly consists of the studies pursued in archaeology, history, literary references, linguistics, Populaton studies and genetics.