* Astronomy

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RE: First Americans

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Clovis culture

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RE: First Americans

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DNA uncovers mystery migration to the Americas

Two separate genetic analyses have found evidence for a surprising genetic link between the native populations of the Americas and Oceania.
The DNA of some native Amazonians shows significant similarity to indigenous inhabitants of Australia and Melanesia.
The two research groups, however, offer contrasting interpretations of how the Americas were first peopled.
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Solutreans Are Indigenous Americans

Spoiler

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Most Complete Ice Age Skeleton Helps Solve Mystery of First Americans

On Thursday, a team led by archaeologist James Chatters reported in the journal Science that they'd found a big piece of the puzzle: the most complete skeleton of such antiquity ever found in the Americas, between 12,000 and 13,000 years old. The skeleton contains both the craniofacial features of ancient Paleoamericans and mitochondrial DNA possessed by latter-day Native Americans.
The skeleton, dubbed "Naia" (an ancient Greek name related to water nymphs) by her discoverers, belonged to a teenage girl who fell more than 100 feet to her death nearly a half mile inside an elaborate network of karst caves that were largely dry at the end of the Pleistocene. Divers who found Naia in the cave on Mexico's Yucatán Peninsula named her watery grave Hoyo Negro ("Black Hole" in Spanish).
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10,000 Years on the Bering Land Bridge

Genetic and environmental evidence indicates that after the ancestors of Native Americans left Asia, they spent 10,000 years in shrubby lowlands on a broad land bridge that once linked Siberia and Alaska. Archaeological evidence is lacking because it drowned beneath the Bering Sea when sea levels rose.
University of Utah anthropologist Dennis O'Rourke and two colleagues make that argument in the Friday, Feb. 28, issue of the journal Science. They seek to reconcile existing genetic and paleoenvironmental evidence for human habitation on the Bering land bridge - also called Beringia - with an absence of archaeological evidence.
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Europeans & Asians In Pre Historic America - Journey to 10,000 BC

Spoiler

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Humans may have reached the Americas 22,000 years ago

Humans lived in South America at the height of the last ice age, thousands of years earlier than we thought, according to a controversial study. A team claims to have found 22,000-year-old stone tools at a site in Brazil, though other archaeologists are disputing the claim.
Christelle Lahaye of Michel de Montaigne Bordeaux 3 University in France and colleagues excavated a rock shelter in north-east Brazil and found 113 stone tools.
The team dated the sediments in which the tools were buried using a technique that determines when the sediments were last exposed to light. Some tools were buried 22,000 years ago - thousands of years earlier than any known human colonisation of the Americas.
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Oregon stone tools enliven 'earliest Americans' debate

Scientists studying how North America was first settled have found stone spearheads and darts in Oregon, US, that date back more than 13,000 years.
The hunting implements, which are of the "Western Stemmed" tradition, are at least as old as the famous Clovis tools thought for a long time to belong to the continent's earliest inhabitants.
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