To move from one place to another for good is migration. There are so many causes to leave the homes; those are economic, social, religious, political, cultural and many more. For this purpose people made their way across thousands of miles to Australia by crossing land bridges. So this practice is not new it started more than 60,000 years ago. It is also the fact that descended from humans who left Africa in the first migration; those were hard people, whose stocky, muscular bodies helped them survive in cold environment. It is supposed that they had larger brain and strong nervous system, produced tools, buried their dead with rituals. In 2005, the national geographic society and IBM launched the Genographic project to retrace the earliest human migrations through the use of DNA.