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Map of early human migrations based on the Out of Africa theory; figures are in thousands of years ago (kya). [2]The peopling of the Americas began when Paleolithic hunter-gatherers (Paleo-Indians) entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the ...
The term senile dementia of the Alzheimer type (SDAT) was used for a time to describe the condition in those over 65, with classical Alzheimer's disease being used to describe those who were younger. Eventually, the term Alzheimer's disease was formally adopted in medical nomenclature to describe individuals of all ages with a characteristic ...
The archaeology of the Americas is the study of the archaeology of the Western Hemisphere, including North America (Mesoamerica), Central America, South America and the Caribbean. This includes the study of pre-historic/ pre-Columbian and historic indigenous American peoples , as well as historical archaeology of more recent eras, including the ...
The Ship Sarcophagus: a Phoenician ship carved on a sarcophagus, 2nd century AD.. The theory of Phoenician discovery of the Americas suggests that the earliest Old World contact with the Americas was not with Columbus or Norse settlers, but with the Phoenicians (or, alternatively, other Semitic peoples) in the first millennium BC.
Examples of Clovis and other Paleoindian point forms, markers of archaeological cultures in North America. The Solutrean hypothesis on the peopling of the Americas is the claim that the earliest human migration to the Americas began from Europe during the Solutrean Period, with Europeans traveling along pack ice in the Atlantic Ocean.
A 55-year old man reduced signs of Alzheimer’s in his blood through lifestyle changes and a personalized regime of supplements and medications.
A skull showing evidence of trepanning. Prehistoric medicine is any use of medicine from before the invention of writing and the documented history of medicine.Because the timing of the invention of writing per culture and region, the term "prehistoric medicine" encompasses a wide range of time periods and dates.
They divided the archaeological record in the Americas into five phases, only three of which applied to North America. [1] The use of these divisions has diminished in most of North America due to the development of local classifications with more elaborate breakdowns of times. [2] 1. The Paleo-Indians stage and/or Lithic stage 2. The Archaic ...