geografia: Oceania

Evidence: 100 • authority: 72

Oceania is a geographical region — or, in certain classifications, one of the world’s continents — including Australasia, Melanesia, Micronesia, and Polynesia. Spanning the Eastern and Western hemispheres, at the centre of the water hemisphere, Oceania is estimated to have a land area of about 9,000,000 square kilometres (3,500,000 sq mi) and a population of around 46.3 million as of 2024, when including Australia but excluding the Malay Archipelago. When compared against other continental land areas, Oceania is the smallest and the second-least populated after Antarctica. It is home to Earth's third-largest remaining area of tropical rainforest, which covers much of the island of New Guine…

Evidence: 45 • authority: 92

Genomic evidence supports the "long chronology" for the peopling of Sahul.. The timing of the settlement of Sahul-the Pleistocene landmass formed by present-day New Guinea, Australia, and Tasmania that existed until ~9000 years ago (~9 ka)-remains highly contentious. The so-called "long chronology" posits the first main arrivals at ~60 to 65 ka, whereas a "short chronology" proposes 47 to 51 ka. Here, we exhaustively analyze an unprecedentedly large mitogenome dataset ( n = 2456) encompassing the full range of diversity from the indigenous populations of Australia, New Guinea, and Oceania, including a lineage related to those of New Guinea in an archaeological sample from Wallacea. We asses…

Evidence: 45 • authority: 92

Genetic Diversification in a New Guinean Frog Genus (<i>Mantophryne</i>, Microhylidae) was Driven by Ancient Tectonic Activity and Climate Reorganisation.. Western Melanesia sits at the junction of three major tectonic plates, characterised by dynamic plate interactions and geological diversity. Tectonic activity in this region has given rise to modern New Guinea, a relatively young island with extreme topographic heterogeneity and evolutionarily complex biota. New Guinea-particularly the East Papuan Composite Terrane (EPCT)-supports exceptional frog diversity; however, evolutionary histories of many frogs of the EPCT are poorly understood. The microhylid frog genus Mantophryne…

Evidence: 45 • authority: 72

The Commonwealth of Australia was proclaimed on 1 January 1901 as a federation of six self-governing former British colonies. The human history of Australia, however, commences with the arrival of the first ancestors of Aboriginal Australians from Maritime Southeast Asia between 50,000 and 65,000 years ago, and continues to the present multicultural democracy. Aboriginal Australians settled throughout continental Australia and many nearby islands. The artistic, musical and spiritual traditions they established are among the longest surviving in human history. The ancestors of today's ethnically and culturally distinct Torres Strait Islanders arrived from what is now Papua New Guinea around…

Evidence: 45 • authority: 72

Papua New Guinea (PNG), officially the Independent State of Papua New Guinea, is an island nation in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean north of Australia. It has a land border with Indonesia to the west and maritime borders with Australia to the south and the Solomon Islands to the east. Its capital is Port Moresby. The country's 462,840 km2 (178,700 mi2) includes a large mainland and hundreds of islands. The eastern half of New Guinea was divided in 1884 between German New Guinea in the north and British New Guinea in the south, with the latter ceded to Australia in 1902 and reor…

Evidence: 45 • authority: 72

Aboriginal Australians are the various indigenous peoples of the Australian mainland and many of its islands, excluding the ethnically distinct people of the Torres Strait Islands. Humans first migrated to Australia 50,000 to 65,000 years ago, and over time formed as many as 500 linguistic and territorial groups. Aboriginal people once lived across large areas of the continental shelf that were later inundated by postglacial sea-level rise at the start of the Holocene inter-glacial period, reshaping coastal landscapes and separating Tasmania from the mainland. Aboriginal people maintained extensive networks within the continent and certain groups maintained relationships with Torres Strait…

Evidence: 45 • authority: 72

Solomon Islands is an archipelagic country consisting of six major islands and over 1,000 smaller islands in Melanesia, Oceania, to the north-east of Australia. It is adjacent to Bougainville to the west, New Caledonia and Vanuatu to the south-east, Fiji, Tuvalu, and Wallis and Futuna to the east, and the Federated States of Micronesia and Nauru to the north. It has a total area of 28,896 square kilometres (11,157 sq mi), and a population of 828,857 according to official estimates from 2025. Its capital and largest city, Honiara, is located on the largest island, Guadalcanal. The country takes its name from the wider area of the Solomon Islands archipelago, which is a collection of Melanesi…

Evidence: 45 • authority: 72

Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. It has a land area of 7,688,287 km2 (2,968,464 sq mi), making it the sixth-largest country in the world, and is the world's flattest and driest inhabited continent. It is a megadiverse country, and its size gives it a wide variety of landscapes and climates, including large deserts centrally and tropical rainforests along the coast. The ancestors of Aboriginal Australians began arriving from Southeast Asia 50,000 to 65,000 years ago, during the Last Glacial Period. By the time of British settlement, Aboriginal Australians…

Evidence: 38 • authority: 72

The Torres Strait Islands are an archipelago of at least 274 small islands in the Torres Strait, a waterway separating far northern continental Australia's Cape York Peninsula and the island of New Guinea. They span an area of 48,000 km2 (19,000 sq mi), but their total land area is 566 km2 (219 sq mi). The Islands are inhabited by the indigenous Torres Strait Islanders. Lieutenant James Cook first claimed British sovereignty over the eastern part of Australia at Possession Island in 1770, but British administrative control only began in the Torres Strait Islands in 1862. The islands are now mostly part of Queensland, a constituent State of the Commonwealth of Australia, but are administered…

Evidence: 38 • authority: 72

The continent of Australia, sometimes known in technical contexts as Sahul (, sə-HOOL), Australia-New Guinea, Australinea, or Meganesia to distinguish it from the country of Australia, is located within the Southern and Eastern hemispheres, near the Maritime Southeast Asia. The continent includes mainland Australia, Tasmania, the island of New Guinea (Papua New Guinea and Western New Guinea), the Aru Islands, the Ashmore and Cartier Islands, most of the Coral Sea Islands, and some other nearby islands. Situated in the geographical region of Oceania, more specifically in the subregion of Australasia, Australia is the smallest of the seven traditional continents. The continent includes a cont…

Evidence: 38 • authority: 80

Large Earthquake in Papua New Guinea re-ruptures major fault in just 19 years: More to follow?

Evidence: 30 • authority: 80

OUTSIDERS’ GUIDE TO AUSTRALIA, NEW GUINEA, AND THE SOLOMON ISLANDS