That means that the first out-of-Africa humans made it to the New World. It is my understanding that the Australian Aborigenes are the tail end of that trek, having left a genetic track across South Asia, with the VERY dark Dravidians showing evidence of these genes (as well as the Andaman Islanders). The small populations of Negritos scattered in pockets throughout Asia and the Indian Ocean are also a remnant as I understand. What is a good laymans source for this genetic research? I have always been very interested in this subject.
I subscribe to Science News, and that really helps you keep ahead of this stuff.