Radiocarbon datingRadiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon (14C) is constantly being created in the Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen.
Radiocarbon calibrationRadiocarbon dating measurements produce ages in "radiocarbon years", which must be converted to calendar ages by a process called calibration. Calibration is needed because the atmospheric 14C:12C ratio, which is a key element in calculating radiocarbon ages, has not been constant historically. Willard Libby, the inventor of radiocarbon dating, pointed out as early as 1955 the possibility that the ratio might have varied over time.
Indigenous peoplesIndigenous peoples are the first inhabitants of an area and their descendants. However, the term has no strict definition and can be used to describe a variety of peoples and cultures. In its modern context, the term Indigenous was first used by Europeans, who used it to differentiate the Indigenous peoples of the Americas from the European settlers of the Americas, as well as from the sub-Saharan Africans the settlers enslaved and brought to the Americas by force.
Native Americans in the United StatesNative Americans, sometimes called First Americans or Indigenous Americans, are the Indigenous peoples of the United States or portions thereof, such as American Indians from the contiguous United States and Alaska Natives. The United States Census Bureau defines Native American as "all people indigenous to the United States and its territories—including Native Hawaiian and Other Pacific Islanders—whose data are published separately from American Indians and Alaska Natives".
PolynesiansPolynesians form an ethnolinguistic group of closely related people who are native to Polynesia (islands in the Polynesian Triangle), an expansive region of Oceania in the Pacific Ocean. They trace their early prehistoric origins to Island Southeast Asia and form part of the larger Austronesian ethnolinguistic group with an Urheimat in Taiwan. They speak the Polynesian languages, a branch of the Oceanic subfamily of the Austronesian language family.
Polynesian navigationPolynesian navigation or Polynesian wayfinding was used for thousands of years to enable long voyages across thousands of kilometers of the open Pacific Ocean. Polynesians made contact with nearly every island within the vast Polynesian Triangle, using outrigger canoes or double-hulled canoes. The double-hulled canoes were two large hulls, equal in length, and lashed side by side. The space between the paralleled canoes allowed for storage of food, hunting materials, and nets when embarking on long voyages.
Indigenous rightsIndigenous rights are those rights that exist in recognition of the specific condition of the Indigenous peoples. This includes not only the most basic human rights of physical survival and integrity, but also the rights over their land (including native title), language, religion, and other elements of cultural heritage that are a part of their existence and identity as a people.
SkullThe skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium (: craniums or crania) and the mandible. In humans, these two parts are the neurocranium and the viscerocranium (facial skeleton) that includes the mandible as its largest bone. The skull forms the anterior-most portion of the skeleton and is a product of cephalisation—housing the brain, and several sensory structures such as the eyes, ears, nose, and mouth.
European AmericansEuropean Americans (also referred to as White Americans) are Americans of native European ancestry. This term includes people who are descended from the first European settlers in the United States as well as people who are descended from more recent European arrivals. European Americans have been the largest panethnic group in the United States since about the 17th century. The Spaniards are thought to be the first Europeans to establish a continuous presence in what is now the contiguous United States, with Martín de Argüelles ( () 1566) in St.
Comparative genomicsComparative genomics is a field of biological research in which the genomic features of different organisms are compared. The genomic features may include the DNA sequence, genes, gene order, regulatory sequences, and other genomic structural landmarks. In this branch of genomics, whole or large parts of genomes resulting from genome projects are compared to study basic biological similarities and differences as well as evolutionary relationships between organisms.
Indigenous AustraliansIndigenous Australians are people with familial heritage from, and membership in, the ethnic groups that lived in areas within the Australian continent before British colonisation. They consist of two distinct groups: the Aboriginal peoples of the Australian mainland and Tasmania, and the Torres Strait Islander peoples from the seas between Queensland and Papua New Guinea.
PolynesiaPolynesia (UKˌpɒlᵻˈniːziə, US-ˈniːʒə) is a subregion of Oceania, made up of more than 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are called Polynesians. They have many things in common, including language relatedness, cultural practices, and traditional beliefs. In centuries past, they had a strong shared tradition of sailing and using stars to navigate at night. The largest country in Polynesia is New Zealand.
White AmericansWhite Americans (also referred to as European Americans) are Americans who identify as white people. This group constitutes the majority of the people in the United States. According to the 2020 census, 71%, or 235,411,507 people, were White alone or in combination, and 61.6%, or 204,277,273 people, were White alone. This represented a national white demographic decline from a 72.4% white alone share of the U.S. population in 2010. As of July 1, 2022, United States Census Bureau estimates that 75.
Absolute datingAbsolute dating is the process of determining an age on a specified chronology in archaeology and geology. Some scientists prefer the terms chronometric or calendar dating, as use of the word "absolute" implies an unwarranted certainty of accuracy. Absolute dating provides a numerical age or range, in contrast with relative dating, which places events in order without any measure of the age between events.
Archaeology of the AmericasThe 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 Trans-Atlantic slave trade and European colonization.
Indigenous peoples of the AmericasThe Indigenous peoples of the Americas are the inhabitants of the Americas who have occupied parts of the Western Hemisphere since prior to arrival of European settlers in the 15th century. Indigenous cultures vary by language, culture, social practices, and geography. Some Indigenous peoples in the Americas have historically been hunter-gatherers, while others traditionally practice agriculture and aquaculture.
Taiwanese indigenous peoples'Taiwanese indigenous peoples, also known as Native Taiwanese, Formosan peoples, Austronesian Taiwanese, Yuanzhumin' or Gaoshan people, and formerly as Taiwanese aborigines, are the indigenous peoples of Taiwan, with the nationally recognized subgroups numbering about 569,000 or 2.38% of the island's population. This total is increased to more than 800,000 if the indigenous peoples of the plains in Taiwan are included, pending future official recognition. When including those of mixed ancestry, such a number is possibly more than a million.
GenomicsGenomics is an interdisciplinary field of biology focusing on the structure, function, evolution, mapping, and editing of genomes. A genome is an organism's complete set of DNA, including all of its genes as well as its hierarchical, three-dimensional structural configuration. In contrast to genetics, which refers to the study of individual genes and their roles in inheritance, genomics aims at the collective characterization and quantification of all of an organism's genes, their interrelations and influence on the organism.
History of the AmericasThe history of the Americas begins with people migrating to these areas from Asia during the height of an ice age. These groups are generally believed to have been isolated from the people of the "Old World" until the coming of Europeans in the 10th century from Iceland led by Leif Erikson, and in 1492 with the voyages of Christopher Columbus. The ancestors of today's American Indigenous peoples were the Paleo-Indians; they were hunter-gatherers who migrated into North America.
Before PresentBefore Present (BP) years, also known as "time before present" or "years before present (YBP)", is a time scale used mainly in archaeology, geology and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1 January 1950 as the commencement date (epoch) of the age scale.
