Island tool finds show early settlers' diversity
Caches of tools and animal remains from around 12,000 years ago, found on islands off the California coast, have given remarkable insight into the lives of the first Americans.
The finds show fine tool technology and a rich maritime economy existed there.
The tools vary markedly from mainland cultures of the era such as the Clovis.
The finds, reported in Science, also suggest that rather than a land route to South America, early humans may have used coastal routes.
A team studying California's Channel Islands, off its southern coast, has found that the islands show evidence both of differing technologies and a differing diet, even among the few islands.
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http://www.bbc.co.uk/news/science-environment-12646364http://www.sciencemag.org/content/331/6021/1181.abstract