"How times have changed. Instead of large amounts of meat and spuds, some of the first Americans enjoyed healthy doses of seaweed.
The evidence comes from 27 litres of material collected from the Monte Verde site in southern Chile, widely accepted as the oldest settlement in the Americas. Nine species of seaweed, carbon dated at 13,980 to 14,220 years old, played a major role in a diet that included land plants and animals.
Tom Dillehay of Vanderbilt University in Nashville, Tennessee, argues that the seaweeds were used both as food and medicine. Some were found in remains of ancient hearths and others had been chewed into clumps, or "cuds," which may have been used for medicinal purposes. Indigenous people still use the same species medicinally.
Several of the seaweed species seem to have come from a rocky marine bay that was about 15 kilometres south of the ancient settlement, but three other types are found only on sandy open-ocean shores that, at the time, were 90 km west of the site.
The choice of seaweeds, and local land plants also identified at the site, show that the residents had good knowledge of both coastal resources and foods from the interior, which allowed them to stay in the region year-round, concludes Dillehay, who has studied Monte Verde for three decades."
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