Remains of meals that included seaweed are helping confirm the date of a settlement in southern Chile that may offer the earliest evidence of humans in the Americas.
Researchers date the seaweed found at Monte Verde to more than 14,000 years ago, 1,000 years earlier than the well-studied Clovis culture.
And the report comes just a month after other scientists announced they had found coprolites — fossilized human feces — dating to about 14,000 years ago in a cave in Oregon.

Taken together, the finds move back evidence of people in the Americas by a millennium or more, with settlements in northern and southern coastal areas.

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A new study of DNA suggests nearly all Native Americans can trace part of their ancestry to just six women, whose descendants immigrated to North, Central and South America as much as 20,000 years ago.