Three points of interest here:
1) the biggest question in American Archaeology is how and wehn the continent was settled by its inhabitants.
2) More than material culture and the fossil record, genetic data provide us with a huge data set that continuously reveals more as our ability to decode it expands,
and
3) Science presents us with a body of knowledge that is only true as far as we are able to discern at the present moment, and that facts change as our ability to understand them change. Thus, while at one point genetic evidence pointed to a single wave, we now have the ability to refine that and overturn it. It seems like there were three waves of migration that populated the Americas. And if the evidence changes, so will our conclusions.
Americas 'settled in three waves'
http://www.bbc.co.uk/news/science-environment-18770963
1) the biggest question in American Archaeology is how and wehn the continent was settled by its inhabitants.
2) More than material culture and the fossil record, genetic data provide us with a huge data set that continuously reveals more as our ability to decode it expands,
and
3) Science presents us with a body of knowledge that is only true as far as we are able to discern at the present moment, and that facts change as our ability to understand them change. Thus, while at one point genetic evidence pointed to a single wave, we now have the ability to refine that and overturn it. It seems like there were three waves of migration that populated the Americas. And if the evidence changes, so will our conclusions.
Americas 'settled in three waves'
http://www.bbc.co.uk/news/science-environment-18770963
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