German geneticists have found evidence of substantial gene flow between Indian populations and Australia about 4,230 years ago. 4,000 years ago, Australia was no longer connected to the mainland as it had been during the Ice Age. The immigrants thus crossed the ocean, arriving by boat (Gunter Senft / MPI for Psycholinguistics) Their study, published online in the Proceedings of the National Academy of Sciences, also reveals a common origin for Australian,...
