... A growing number of experts are radically rethinking how the Americas were first populated. Scientists say an emerging picture suggests that the earliest people to reach the New World may have arrived by both land and coastal routes. ... recent archaeological finds and geophysical studies have dramatically challenged this picture, advancing the possibility that people traveled both by boat and by foot.
"The change in emphasis from interior corridor to coastal route has been truly astonishing and only occurred in the last year or so," said Charlotte Beck, an anthropologist at Hamilton College in Clinton, New York. "This is really new for everybody."
... Until now, one of the primary arguments against a coastal migration route has been the lack of archaeological evidence. "There are no sites," said Beck. "Of course, rising sea levels mean that most, if not all, of the sites would be underwater now." ..."The only thing that's certain is it has to be more complicated than just one group migrating across Beringia," said Beck. "It's more likely that there were numerous migrations at different times, by different routes."
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