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Recent single-origin hypothesis
The single-origin hypothesis (or Out-of-Africa model) is one of two accounts of the origin of anatomically modern humans, Homo sapiens. Because of the scarcity of fossils and the discovery of important new finds every few years, researchers disagree about the details and sometimes even basic elements of human evolutionary history. According to the single-origin model, every species of the genus Homo but one, Homo sapiens, was driven extinct. This species had evolved in Eastern Africa between 100,000 and 200,000 years ago and, some time afterwards, in a relatively recent exodus, began colonizing the rest of the world. According to the single-origin model, these more recent migrants did not interbreed with the scattered descendants of earlier exodi.
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Fossils & Ruins News
June 9, 2025
June 3, 2025 — Collapse of the West Antarctic Ice Sheet could be triggered with very little ocean warming above present-day, leading to a devastating four meters of global sea level rise to play out over hundreds ...
June 3, 2025 — A new study has finally confirmed the theory that the cause of extraordinary global tremors in September -- October 2023 was indeed two mega tsunamis in Greenland that became trapped standing waves. Using a brand-new type of satellite altimetry, the ...
June 2, 2025 — New research adds to our understanding of how rapidly rising sea levels due to climate change foreshadow the end of the Great Barrier Reef as we know it. The findings suggest the reef can withstand rising sea levels in isolation but is vulnerable to ...
June 2, 2025 — Researchers have recreated the world's oldest synthetic pigment, called Egyptian blue, which was used in ancient Egypt about 5,000 years ...
May 28, 2025 — A new species of velvet worm, Peripatopsis barnardi, represents the first ever species from the arid Karoo, which indicates that the area was likely historically more forested than at present. In the Cape Fold Mountains, we now know that every ...
May 28, 2025 — A new method could soon unlock the vast repository of biological information held in the proteins of ancient soft tissues. The findings could open up a new era for palaeobiological ...
May 29, 2025 — New techniques used to analyze soft tissue in dinosaur fossils may hold the key to new cancer discoveries. Researchers have analyzed dinosaur fossils using advanced paleoproteomic techniques, a method that holds promise for uncovering molecular data ...
May 29, 2025 — The fossils of ancient salamander-like creatures in Scotland are among the most well-preserved examples of early stem tetrapods -- some of the first animals to make the transition from water to land. Thanks to new research, scientists believe that ...
May 29, 2025 — Anthropologists have examined the societal consequences of global glacier loss. This article appears alongside new research that estimates that more than three-quarters of the world's glacier mass could disappear by the end of the century under ...
May 29, 2025 — Long considered a disease brought to the Americas by European colonizers, leprosy may actually have a much older history on the American continent. Scientists reveal that a recently identified second species of bacteria responsible for leprosy, ...
May 29, 2025 — Spring in the Arctic brings forth a plethora of peeps and downy hatchlings as millions of birds gather to raise their young. The same was true 73 million years ago, according to a new article. The paper documents the earliest-known example of birds ...
May 29, 2025 — Replanting forests can help cool the planet even more than some scientists once believed, especially in the tropics. But even if every tree lost since the mid-19th century is replanted, the total effect won't cancel out human-generated ...
Latest Headlines
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June 9, 2025 — In a bold reimagining of Southeast Asia s prehistory, scientists reveal that the Philippine island of Mindoro was a hub of human innovation and ...
June 7, 2025 — In the dense forests of Michigan s Upper Peninsula, archaeologists have uncovered a massive ancient agricultural system that rewrites what we thought we knew about Native American farming. Dating ...
June 6, 2025 — Bronze Age life changed radically around 1500 BC in Central Europe. New research reveals diets narrowed, millet was introduced, migration slowed, and social systems became looser challenging old ...
May 29, 2025 — A new study reveals that the aerobic nitrogen cycle in the ocean may have occurred about 100 million years before oxygen began to significantly accumulate in the atmosphere, based on nitrogen isotope ...
May 28, 2025 — Palaeontologists have analyzed the most complete stegosaurian skull ever found in Europe and rewritten the evolutionary history of this iconic group of ...
May 28, 2025 — Chemists have demonstrated how RNA (ribonucleic acid) might have replicated itself on early Earth -- a key process in the origin of ...
May 28, 2025 — Researchers compared the whole genome sequence of two genetically distinct lineages of bed bug, and their findings indicate bed bugs may well be the first true urban ...
May 28, 2025 — New research brings together 7,000 years of history in South Arabia to show how ancient pastoralists changed placement and construction of monuments over time in the face of environmental and ...
May 27, 2025 — Humans were making tools from whale bones as far back as 20,000 years ago, according to a new study. This discovery broadens our understanding of early human use of whale remains and offers valuable ...
May 26, 2025 — Contrary to widespread assumptions, the largest shark that ever lived -- Otodus megalodon -- fed on marine creatures at various levels of the food pyramid and not just the top. Scientists analyzed ...