(American Association for the Advancement of Science) New dating of rocks and reanalysis of animal bones from islands along the shore of southeastern Alaska suggests that a narrow corridor between the Pacific Ocean and the Cordilleran Ice Sheet (CIS) in Alaska may have enabled the migration of humans to the Americas as early as 17,000 years ago.
from EurekAlert! - Archaeology https://ift.tt/2J05l9K
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