Climate and Human Evolution
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Climate and Human Evolution
Climate has repeatedly transformed the environments in which humans and earlier hominins lived. Over millions of years, changes in rainfall, temperature, vegetation, water availability, sea level, and the frequency of extreme climatic events altered the distribution of habitats and resources across Africa and Eurasia. These environmental changes did not simply push human evolution in a single direction. Instead, the evidence increasingly points toward a complex relationship in which ecological variability, geographic opportunities, behavioral flexibility, biological adaptation, population movement, and cultural innovation interacted.
Research on human evolution has therefore moved beyond simple models in which increasing dryness or expanding grasslands directly produced particular evolutionary changes. Fossil, archaeological, geological, genetic, and paleoclimate evidence instead suggests that hominins repeatedly encountered mosaics of forests, woodlands, grasslands, wetlands, deserts, lakes, river systems, coastlines, and mountain environments. The ability to survive across changing conditions may itself have become an important characteristic of the genus Homo.
Climate Variability and Evolutionary Flexibility
One of the most influential ideas in research on climate and human evolution is that environmental variability may have been as important as long-term trends toward greater aridity or cooling. East African climate records show repeated oscillations between wetter and drier conditions, often associated with changing lake levels, vegetation patterns, and freshwater availability.
The variability-selection hypothesis proposes that natural selection may favor traits that increase flexibility when environments repeatedly change. Rather than becoming narrowly specialized for a particular habitat, populations capable of adjusting their diet, movement, technology, social organization, and resource use may have been better able to survive unpredictable conditions.
This interpretation helps explain why human evolutionary history cannot be reduced to a simple transition from forest to savanna. Many fossil sites indicate that hominins occupied heterogeneous landscapes containing combinations of woodland, grassland, wetlands, freshwater resources, and more open terrain. Some ecological communities associated with early hominins have no close modern equivalents.
Environmental instability may therefore have created recurring evolutionary challenges rather than a single directional pressure. Periods of environmental change could alter food availability, population density, migration routes, competition, and opportunities for expansion.
Africa and the Environmental Context of Human Origins
Africa contains the longest and most important record of hominin evolution, and much research has focused on reconstructing the continent's changing environments.
East African geological and climate records document major changes associated with tectonic uplift, orbital cycles, lake formation, regional aridity, rainfall variability, and the expansion of C4 grasslands. These environmental transformations occurred during periods that also witnessed major developments in hominin evolution, including the emergence and diversification of Homo, changes in brain size and body form, new stone-tool technologies, and repeated population dispersals.
However, the relationship between environmental change and evolutionary change is not necessarily one of direct cause and effect. Some important evolutionary developments occurred during relatively wet conditions, while others occurred during dry periods or during rapid transitions between environmental states.
Evidence from the Turkana Basin, Olduvai Gorge, Laetoli, the Omo region, Chew Bahir, Lake Magadi, and other African sites reveals considerable local ecological diversity. Hominins sometimes occupied relatively moist habitats within larger semiarid regions and repeatedly used lakes, springs, wetlands, and river systems as dependable resources.
Southern and northern Africa also played important roles in the development of Homo sapiens. Archaeological evidence from southern Africa indicates that human populations occupied coastal, woodland, grassland, and interior environments under widely varying climatic conditions. North Africa alternated between extreme desert conditions and humid periods when grasslands, lakes, and river systems spread across areas now occupied by the Sahara.
Climate and the Evolution of Homo sapiens
The emergence of Homo sapiens occurred against a background of substantial climatic and ecological variability across Africa. Modern humans did not evolve within a single uniform environment. Different African regions experienced distinct climatic histories, and populations were often separated and reconnected as environments changed.
This geographic complexity has contributed to models in which early Homo sapiens populations were distributed across multiple African regions rather than originating from one isolated population living in one ecological setting.
Changing environments may also have encouraged behavioral flexibility. Middle Stone Age archaeological records document changes in stone technology, resource use, mobility, settlement patterns, and other behaviors. Some periods of technological innovation coincide with significant environmental shifts, although climate alone cannot explain the development of complex human behavior.
Recent research also indicates that Homo sapiens broadened its ecological range within Africa before the major global dispersals of modern humans. Populations increasingly occupied deserts, forests, highlands, coasts, and other habitats that presented very different ecological challenges.
This ecological expansion may have been important to later human success because populations already possessed behavioral and technological strategies for surviving under a wide range of environmental conditions.
Green Sahara and Human Dispersal
One of the clearest examples of climate altering human geography is the repeated transformation of the Sahara.
Today, much of the Sahara is extremely dry, but orbital changes periodically strengthened African monsoon systems and produced substantially wetter conditions. During these Green Sahara periods, lakes, rivers, grasslands, and wetlands expanded across areas that are now desert.
These environments created temporary corridors connecting populations in northern, eastern, central, and western Africa. Ancient river systems and freshwater networks may have allowed people and animals to cross regions that became formidable barriers during later dry periods.
Genetic, archaeological, geological, and paleohydrological evidence indicates that repeated expansions and contractions of habitable environments influenced population connectivity across northern Africa.
The Sahara therefore alternated between functioning as a barrier and functioning as a corridor. This pattern illustrates a broader principle in human evolution: geographic barriers were often dynamic rather than permanent.
Arabia, the Levant, and Dispersal Beyond Africa
Climate also strongly influenced opportunities for human expansion beyond Africa.
The Arabian Peninsula repeatedly experienced humid phases during which rainfall increased and lakes, rivers, wetlands, and grasslands spread across landscapes that are now extremely arid. Archaeological evidence indicates multiple episodes of hominin occupation during these wetter periods.
Rather than representing a single migration event, movement beyond Africa appears to have occurred repeatedly. Some expansions may have disappeared without leaving major genetic contributions to later populations, while others eventually contributed to the widespread settlement of Eurasia and beyond.
The Levant formed another important ecological corridor connecting Africa and Eurasia. Changes in rainfall and water availability repeatedly altered the suitability of this region for both Homo sapiens and Neanderthals.
Sea levels, coastlines, desert boundaries, vegetation zones, and freshwater systems all influenced migration opportunities. Farther east, environmental and geographic changes also shaped movement through South and Southeast Asia and ultimately toward Sahul.
Human dispersal was therefore not simply a matter of populations deciding to migrate. Climatic conditions could open or close entire geographic routes and alter the resources available along them.
Neanderthals, Denisovans, and Pleistocene Climate
Archaic humans also occupied environments strongly shaped by Pleistocene climatic cycles.
Neanderthals lived across western Eurasia during repeated glacial and interglacial periods. Their geographic range included environments ranging from relatively mild woodland to cold steppe landscapes. Researchers have examined whether Neanderthal body proportions, respiratory anatomy, energy requirements, clothing, shelter, fire use, and hunting strategies represented adaptations to cold climates.
The evidence indicates that Neanderthal survival involved both biological and cultural responses. Climate influenced the distribution of suitable habitats, but climatic deterioration alone does not provide a complete explanation for Neanderthal population decline or extinction.
Research increasingly examines climate together with population size, competition, demographic isolation, technological differences, interbreeding, and interactions with expanding Homo sapiens populations.
Denisovan-related populations occupied parts of Asia, including high-altitude environments. Genetic evidence demonstrates that later modern humans inherited some adaptive variants from archaic populations, showing that interbreeding could transfer traits useful for survival in challenging environments.
Biological Adaptation to Climate
Human populations also evolved biological adaptations to environmental conditions.
Body size and limb proportions show geographic patterns associated with thermoregulation. Compact bodies can reduce heat loss in cold environments, while longer limbs and relatively slender bodies can increase heat dissipation in hotter climates. These patterns are not absolute, but they illustrate how temperature can influence human morphology over evolutionary time.
Humans also possess unusually effective mechanisms for managing heat during prolonged activity. Sweating, reduced body hair, upright posture, and endurance locomotion have all been investigated as adaptations associated with activity in hot environments.
Skin pigmentation represents another major climatic adaptation. Geographic differences in ultraviolet radiation created different evolutionary pressures involving protection from excessive ultraviolet exposure and the need to maintain sufficient vitamin D production. Migration, diet, clothing, culture, and genetic variation later complicated these relationships.
Human populations living at high altitude provide another example. Tibetan populations possess genetic adaptations associated with chronic low-oxygen environments. Some of these adaptations involve genetic variants related to the EPAS1 pathway, and evidence indicates that archaic introgression contributed to at least part of this adaptive history.
Humans have also developed physiological and cultural responses to extreme heat and cold, illustrating the combined importance of genetic evolution, developmental plasticity, acclimatization, technology, and behavior.
Technology, Diet, and Ecological Adaptability
Climate affected human evolution not only through biological selection but also by changing the resources available to populations.
Shifts in vegetation altered the distribution of edible plants and grazing animals. Expansion of C4 ecosystems changed the food webs available to early hominins, while lakes, rivers, wetlands, and coastal areas created reliable concentrations of aquatic and terrestrial resources.
Dietary flexibility appears to have been an important component of human ecological success. Rather than depending on one particular food source or habitat, many hominin populations exploited combinations of plants, meat, freshwater resources, coastal foods, and seasonally available resources.
Technology further expanded the range of environments humans could occupy. Stone tools, fire, clothing, shelter, food processing, hunting strategies, and systems for transporting resources reduced dependence on direct biological adaptation.
Fire was especially important because it altered the relationship between humans and their surroundings. It provided warmth, protection, cooking opportunities, and potentially new methods of modifying landscapes and resources.
Through these technologies, humans increasingly constructed their own ecological niches rather than simply adapting passively to existing environments.
Climate, Culture, and Behavioral Innovation
Some researchers have investigated whether periods of climatic instability correspond with episodes of behavioral or technological innovation.
Southern African archaeological records have been particularly important in this debate. Changes in tool industries, settlement intensity, coastal resource use, and other behaviors have sometimes occurred during periods of substantial climatic or environmental change.
However, correlations between climate and innovation do not necessarily demonstrate direct causation. Social networks, population density, cultural transmission, demographic structure, resource competition, and technological traditions also influenced behavioral change.
Climate is therefore best understood as one component within a larger evolutionary system.
Environmental pressures could create new challenges or opportunities, while cultural innovation allowed human populations to respond in ways unavailable to most other species.
From Environmental Adaptation to Global Expansion
The long-term evolutionary importance of climate may ultimately lie in the increasing capacity of humans to survive environmental diversity.
Earlier hominins occupied a surprisingly wide range of ecological settings, but later members of the genus Homo expanded into increasingly varied environments. Homo sapiens eventually occupied deserts, tropical forests, high-altitude plateaus, Arctic environments, islands, and other habitats far beyond the ecological range of earlier primates.
This expansion depended on a combination of biological evolution and cultural adaptability.
Clothing reduced dependence on biological cold tolerance. Fire expanded the range of climates humans could survive. Tools broadened diets and hunting possibilities. Social cooperation allowed resources and knowledge to be shared. Migration connected populations across changing landscapes. Cultural knowledge could also accumulate far more rapidly than genetic adaptation.
Human evolution consequently involved an increasing ability to respond to environmental change through behavior as well as biology.
Limits of Climate Explanations
Although climate clearly influenced human evolution, environmental explanations require caution.
Chronological coincidence does not prove that climatic change caused an evolutionary event. Fossil and archaeological records are incomplete, and climate reconstructions vary greatly in geographic and temporal resolution.
Conditions recorded in marine sediments may represent regional trends that differed substantially from those experienced at individual archaeological sites. Likewise, local lakes, springs, vegetation patches, and topography could create ecological refuges even during periods of wider regional aridity.
Human populations also actively modified their environments and responded through migration, technology, social organization, and cultural learning.
For these reasons, current research increasingly combines paleoclimate evidence with archaeology, fossils, genetics, ecological modeling, isotope analysis, biomarkers, sediment cores, and other sources of evidence.
The resulting picture is less deterministic than older climate-driven models. Climate repeatedly altered the opportunities and constraints faced by hominin populations, but human evolutionary outcomes depended on interactions among environment, biology, demography, behavior, culture, geography, and chance.
Conclusion
Climate has been a persistent influence on human evolution, shaping habitats, resources, migration routes, population connectivity, and the selective pressures experienced by hominins for millions of years.
The most important lesson from the growing body of research is not that one climatic event caused one evolutionary transformation. Human evolution unfolded within continuously changing environments. Forests expanded and contracted, lakes appeared and disappeared, deserts repeatedly greened, coastlines shifted, glaciers advanced and retreated, and migration corridors opened and closed.
Across these changes, adaptability became increasingly important.
Hominins survived by altering where they lived, what they ate, how they moved, and how they used technology. Biological adaptations helped populations cope with ultraviolet radiation, temperature, altitude, and other environmental pressures, while cultural adaptations increasingly allowed humans to modify their surroundings and survive conditions that would otherwise have imposed severe biological constraints.
The evolutionary history of humanity is therefore closely connected to Earth's climatic history. Yet the relationship is best understood not as simple environmental determinism, but as a continuing interaction between changing environments and the exceptional biological, behavioral, technological, and cultural flexibility of humans.
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Foundations, Models, and Research Methods
| Pei-Wei Sun | Human Genetics | 2026-05-08
Examines how genome-environment association studies can reconnect human evolutionary genetics with temperature, altitude, ultraviolet radiation, pathogens, diet, and other environmental selective pressures.
| Multiple authors | Annual Review of Marine Science | 2025
Reviews marine sediment records used to reconstruct African and global climate during human evolution and discusses both their value and limitations for linking climate to hominin change.
| Axel Timmermann et al. | Nature Reviews Earth & Environment | 2024-09-12
Reviews evidence for how glacial cycles, shifting habitats, ecological flexibility, dispersal opportunities, and environmental instability shaped the evolutionary trajectories of Homo species.
| Multiple authors | Quaternary Science Advances | 2024
Examines when hominins benefited from ecological specialization versus generalization and considers how climate variability favored different forms of biocultural adaptability.
| Axel Timmermann et al. | Nature | 2022-04-13
Combines climate modeling with archaeological and fossil evidence to reconstruct changing habitat suitability for several hominin species and investigate climate's role in human species succession.
| María Fernanda Sánchez Goñi | Evolutionary Human Sciences | 2020-10-28
Reviews regional differences in past climate change and stresses the importance of matching appropriately scaled environmental evidence with archaeological and evolutionary records.
| Christopher J. Campisano et al. | PaleoAnthropology | 2017
Explains how high-resolution paleoclimate drilling records can be integrated with fossil and archaeological evidence to investigate environmental influences on human evolution.
| Richard Potts and J. Tyler Faith | Journal of Human Evolution | 2015-10
Explores alternating periods of high and low environmental variability as possible contexts for natural selection, technological innovation, and speciation in Plio-Pleistocene hominins.
Compares major environmental and evolutionary models including aridity hypotheses, turnover pulses, variability selection, Red Queen dynamics, and climate-driven speciation.
| Richard Potts | Quaternary Science Reviews | 2013-08-01
Examines hominin evolution in highly variable environments and argues that adaptability to changing conditions may have been more important than adaptation to one steadily changing habitat.
| Richard Potts | Current Anthropology | 2012-11-27
Synthesizes environmental and archaeological evidence concerning early Homo and examines how behavioral flexibility may have developed under conditions of repeated ecological change.
| National Research Council | National Academies Press | 2010
Summarizes research priorities and methods for determining how climatic changes may have affected human evolution, ecology, behavior, dispersal, and extinction.
| Richard Potts | Evolutionary Anthropology | 1999-02-08
Presents the variability-selection hypothesis, proposing that natural selection favored traits enhancing adaptability to environmental unpredictability rather than specialization for one habitat.
| Elisabeth S. Vrba | Journal of Anthropological Research | 1996-04-01
Connects climatic change, faunal turnover, developmental timing, and evolutionary transformations in hominins within the broader turnover-pulse framework.
East African Paleoclimate and Early Hominin Evolution
| Rachel L. Lupien et al. | Quaternary Science Reviews | 2026
Reconstructs rapid early Pleistocene climate, vegetation, and fire dynamics in the Turkana Basin during intervals important to hominin evolution and stone-tool development.
| Julio Mercader et al. | Communications Earth & Environment | 2025-01-16
Shows that Homo erectus occupied an extremely dry steppe-desert environment at Engaji Nanyori in Tanzania roughly one million years ago, indicating substantial ecological flexibility.
| M. Negash et al. | Journal of Human Evolution | 2024-12
Uses modern African ecosystems as landscape-scale analogues for estimating woody vegetation cover and improving reconstructions of early hominin habitats.
| Multiple authors | Journal of Human Evolution | 2024-01
Examines aridity, drinking-water availability, and freshwater foods in the Turkana Basin and evaluates how access to aquatic resources shaped hominin landscapes.
| Multiple authors | Journal of Human Evolution | 2024
Finds that hominin turnover at Laetoli coincided with significant vegetation change, providing evidence for ecological restructuring across an important evolutionary interval.
| Amelia Villaseñor et al. | Journal of Human Evolution | 2023-07
Shows that Pliocene hominins at East Turkana were often associated with relatively mesic local habitats embedded within a generally semiarid regional landscape.
| Multiple authors | Palaeogeography, Palaeoclimatology, Palaeoecology | 2023-04-15
Separates local and regional drivers of East African environmental change during periods associated with the emergence and diversification of Paranthropus and Homo.
| Rhianna C. Drummond-Clarke | Communicative & Integrative Biology | 2023-03-21
Uses evidence from living great apes to argue that trees and arboreal behavior remained important during human evolution even as African environments became more open and seasonal.
| Multiple authors | Global and Planetary Change | 2022-01
Presents a long environmental record from the Omo region showing orbital forcing and progressive aridification during periods associated with Homo erectus and Acheulean technologies.
| Frank Schaebitz et al. | Communications Earth & Environment | 2021-06-14
Reconstructs eastern African hydroclimate over the past 200,000 years and investigates how changing moisture conditions could have altered habitats and Homo sapiens dispersal corridors.
| Multiple authors | Palaeogeography, Palaeoclimatology, Palaeoecology | 2021-01-01
Describes the Olduvai Gorge Coring Project and its continuous sedimentary records for comparing local climatic change directly with archaeological and fossil sequences.
| Rachel L. Lupien et al. | Journal of Human Evolution | 2021
Reviews eastern African environmental variation during the past million years and considers links among vegetation change, landscape variability, Homo morphology, technology, and behavior.
| Stefanie Kaboth-Bahr et al. | Proceedings of the National Academy of Sciences | 2021
Argues that low-latitude Pacific climate dynamics generated opposing wet-dry conditions across Africa and helped create the environmental mosaic within which Homo sapiens evolved.
| Rachel L. Lupien et al. | Quaternary Science Reviews | 2020-10-01
Examines abrupt early Pleistocene climate changes in the Turkana Basin and their possible relationship to changing hominin behavior and the emergence of Acheulean technology.
| T. Jonathan Davies et al. | Scientific Reports | 2020-07-24
Uses the evolutionary ages and distributions of African savanna trees to provide an additional method for reconstructing environmental settings experienced by hominin ancestors.
| Richard Potts et al. | Science Advances | 2020
Documents increased ecological resource variability during a major behavioral and technological transition in the Olorgesailie Basin of eastern Africa.
Shows that many early hominin fossil communities represented ecological combinations without close modern analogues, warning against simplistic comparisons with present-day African habitats.
| Pratigya J. Polissar et al. | Nature Geoscience | 2019-07-22
Finds that African C4 ecosystems expanded substantially around ten million years ago without requiring simple regional aridification, complicating older explanations of grassland evolution.
| Rachel L. Lupien et al. | Quaternary Science Reviews | 2018-04-15
Presents an early Pleistocene leaf-wax hydroclimate record from West Turkana showing substantial rainfall variability during a period important to Homo evolution.
| R. Bernhart Owen et al. | Proceedings of the National Academy of Sciences | 2018
Uses the Lake Magadi drilling record to identify progressive East African aridification and repeated wet-dry cycles during the last half-million years.
| Richard Potts et al. | Science | 2018
Links technological and behavioral transformations in eastern Africa with major changes in landscapes, resource distributions, and environmental variability.
| Multiple authors | Journal of Human Evolution | 2017
Reports new excavations at HWK EE in Olduvai Gorge integrating archaeology, site formation, fauna, and paleoenvironment during early Pleistocene hominin activity.
| Andrew S. Cohen et al. | Scientific Drilling | 2016-02-19
Describes the Hominin Sites and Paleolakes Drilling Project, which obtained high-resolution lake sediment records near major East African hominin sites.
| Tina Lüdecke et al. | Journal of Human Evolution | 2016-01
Shows persistent C3-dominated vegetation in the Malawi Rift while similar hominins occupied more open East African settings, indicating substantial habitat flexibility.
| Kevin T. Uno et al. | Proceedings of the National Academy of Sciences | 2016
Uses plant-wax biomarkers to reconstruct Neogene vegetation change in eastern Africa and illuminate the spread of C4 ecosystems important to hominin habitats and diets.
| Multiple authors | Philosophical Transactions of the Royal Society B | 2016
Uses plant-wax biomarkers from West Turkana to document dynamic shifts between C3 and C4 vegetation in environments occupied by Paranthropus and early Homo.
| Martin H. Trauth et al. | Journal of Human Evolution | 2015-10
Compares episodes of climatic stability and instability preserved in eastern African lake deposits and discusses how both environmental states may have influenced hominin evolution.
| Multiple authors | Journal of African Earth Sciences | 2015-01
Reconstructs the paleoecology of the Upper Laetolil Beds and provides environmental context for Pliocene hominins and associated mammals in northern Tanzania.
| Naomi E. Levin et al. | Proceedings of the National Academy of Sciences | 2015
Uses stable isotopes to document major dietary changes among early Pliocene Ethiopian hominins and primates as African ecosystems increasingly incorporated C4 resources.
| Mark A. Maslin et al. | Quaternary Science Reviews | 2014-10-01
Reviews the pulse climate variability hypothesis, emphasizing interactions among East African tectonics, lake formation, climate fluctuations, hominin speciation, brain expansion, and dispersal.
| Multiple authors | Journal of Human Evolution | 2014
Examines environmental change and hominin exploitation of C4 resources in wetland-savanna mosaics, connecting ecological variability with dietary flexibility.
| Susanne Shultz and Mark A. Maslin | PLOS ONE | 2013
Relates episodes of East African lake expansion and contraction to hominin diversification, dispersal, brain expansion, and major changes in the early human evolutionary record.
| Verena Foerster et al. | Quaternary International | 2012-10-01
Reconstructs approximately 45,000 years of environmental change from Ethiopia's Chew Bahir basin, documenting major shifts between wetter and more arid conditions.
| Matt Grove | Journal of Human Evolution | 2011-09
Tests variability selection with evolutionary models and argues that fluctuating climates may have favored behavioral flexibility and early stone-tool technologies.
| Martin H. Trauth et al. | Quaternary Science Reviews | 2010-11
Develops the concept of East African “amplifier lakes,” whose rapid responses to orbital climate forcing produced major ecological changes within hominin landscapes.
| Multiple authors | Global and Planetary Change | 2010-07
Examines Cenozoic vegetation and climate change in tropical Africa to reconstruct the ecological settings within which African hominids evolved.
| Carsten Niemitz | Naturwissenschaften | 2010-02-03
Reviews hypotheses for the origin of habitual bipedalism and questions explanations based solely on savanna expansion, climatic warming, or thermoregulation.
| Martin H. Trauth, Juan C. Larrasoaña and Manfred Mudelsee | Quaternary Science Reviews | 2009-03
Reassesses long-term East African climate trends, lake records, and environmental rhythms, finding that several major evolutionary developments occurred during relatively wet but highly variable periods.
| Multiple authors | Palaeogeography, Palaeoclimatology, Palaeoecology | 2009-02-01
Examines evidence that Olduvai Gorge hominins repeatedly used freshwater springs and wetlands as reliable resources through alternating wet and dry climatic periods.
| Peter Andrews and Marion Bamford | Journal of Human Evolution | 2008-01
Reconstructs past vegetation at Laetoli, Tanzania, and shows that early hominins occupied a heterogeneous ecological landscape rather than a uniform open savanna.
| Martin H. Trauth et al. | Journal of Human Evolution | 2007-11
Investigates high- and low-latitude climatic forcing in East Africa and compares major wet phases and episodes of environmental variability with important events in hominin evolution.
| Mark A. Maslin and Beth Christensen | Journal of Human Evolution | 2007-11
Reviews how tectonic uplift, orbital forcing, global cooling, and regional aridification may have created changing environmental pressures during African human evolution.
| Rhonda L. Quinn et al. | Journal of Human Evolution | 2007-11
Uses carbon-isotope variation in Koobi Fora paleosols to reconstruct the spatial distribution of vegetation across landscapes occupied by Plio-Pleistocene hominins.
| Christopher J. Lepre et al. | Journal of Human Evolution | 2007-11
Reconstructs lake-margin environments in the Koobi Fora Formation and considers how orbital and monsoonal climate variation affected landscapes occupied by early humans.
| Christopher A. Scholz et al. | Proceedings of the National Academy of Sciences | 2007
Documents severe East African megadroughts between roughly 135,000 and 75,000 years ago and discusses their possible significance for early modern human populations.
| Pierre Sepulchre et al. | Science | 2006-09-08
Uses climate modeling to investigate how tectonic uplift altered atmospheric circulation and contributed to increasing aridity in eastern Africa during important stages of hominin evolution.
Investigates African grassland expansion and mammalian evolution while evaluating environmental hypotheses concerning the appearance and diversification of the genus Homo.
| Peter B. deMenocal | Earth and Planetary Science Letters | 2004-03-30
Uses marine paleoclimate records to examine African drying, climatic variability, faunal turnover, and possible connections between environmental change and hominin evolutionary events.
| Jonathan Guy Wynn | American Journal of Physical Anthropology | 2004-02
Uses paleosol carbon isotopes and precipitation indicators from the Turkana Basin to reconstruct more than four million years of environmental change relevant to hominin evolution.
| J. Desmond Clark et al. | Nature | 2003-06-12
Describes the stratigraphic, environmental, chronological, and behavioral setting of early Homo sapiens fossils from the Middle Awash region of Ethiopia.
| Peter B. deMenocal | Science | 1995-10-06
Presents a classic marine sediment record documenting increased African aridity beginning roughly 2.8 million years ago and discusses implications for mammalian and hominin evolution.
Homo sapiens Origins and African Environmental Change
| A. F. Blackwood et al. | Scientific Reports | 2026-03-19
Documents regional differences in the Acheulean-to-Middle Stone Age transition in southern Africa and places technological change within changing environmental and geographic contexts.
| Sara García-Morato et al. | Communications Earth & Environment | 2026-01-08
Reconstructs climatic variability and vegetation dynamics in southern Africa and investigates relationships between environmental change and Middle Stone Age technological and cultural innovation.
| Grzegorz Michalec et al. | Quaternary Environments and Humans | 2026
Reports Middle Stone Age occupation of Sudan's Bayuda Desert more than 59,000 years ago, illuminating human use of landscapes now characterized by extreme aridity.
| Pierre Linchamps et al. | Quaternary Science Reviews | 2025-12-15
Uses machine learning and fossil mammal communities to reconstruct 3.5 million years of temperature and precipitation in South Africa's Cradle of Humankind.
| Kayla B. Worthey et al. | PLOS ONE | 2025-06-12
Links increased forest cover in Morocco during Greenland Interstadial 1 with changes in Later Stone Age land use, food resources, and occupation intensity.
| Multiple authors | Quaternary International | 2025-05-01
Uses Wonderwerk Cave charcoal to reconstruct vegetation and climate in interior southern Africa while examining interactions among plant resources, environment, and human subsistence.
| Lucy Timbrell et al. | Scientific Reports | 2025-04-04
Investigates whether changes in climate seasonality and predictability contributed to technological diversification among Middle Stone Age Homo sapiens populations.
| Multiple authors | Nature | 2025-04-02
Uses ancient DNA from individuals who lived during the Green Sahara to reveal a deeply rooted North African ancestry and long-term population structure.
Models climatic refugia and suitable habitats across Northwest Africa during Marine Isotope Stages 4–2 to investigate human demography, connectivity, and settlement.
| Multiple authors | Nature | 2025
Finds that Homo sapiens substantially broadened its African ecological niche before the major expansion beyond Africa, increasingly occupying forests, deserts, and other challenging environments.
| Multiple authors | Nature Geoscience | 2024
Identifies an extended North African humid interval before mid-Pliocene glaciation, providing deeper climatic context for environmental transformations preceding later hominin evolution.
| Multiple authors | Nature Communications | 2024
Identifies early-warning behavior preceding terminations of African Humid Periods, helping characterize the rapid environmental transitions encountered by Holocene human populations.
| Lucy Timbrell et al. | Scientific Reports | 2022-03-07
Develops a spatially and temporally explicit environmental framework for the eastern African Middle Stone Age using climate and biome reconstructions.
| Frank Schaebitz et al. | Nature Geoscience | 2022
Uses a 620,000-year climate record from Chew Bahir, Ethiopia, to examine relationships between environmental variability, human anatomical change, Middle Stone Age technologies, and Homo sapiens dispersal.
Reviews African climate and vegetation history and discusses major hydroclimatic changes occurring during the emergence and expansion of Homo sapiens.
| Multiple authors | Nature Ecology & Evolution | 2022
Examines environmental influences on technological innovation and behavioral diversity in southern Africa between roughly 92,000 and 80,000 years ago.
| Multiple authors | Quaternary Science Reviews | 2022
Reconstructs environmental sequences surrounding Border Cave in southern Africa and places changing human occupations within Late Pleistocene climatic fluctuations.
| Simon Douze et al. | Journal of Human Evolution | 2021-05
Documents Middle Stone Age occupation at Ravin Blanc I in Senegal, extending evidence of human adaptability into environmentally distinctive western African settings.
| Jayne Wilkins | Evolutionary Anthropology | 2021
Reviews Homo sapiens archaeology in the Kalahari Basin and shows that human populations repeatedly occupied interior southern Africa across markedly different climatic conditions.
| Jerome Reynard and Sarah Wurz | Quaternary Science Reviews | 2020
Reconstructs the paleoecology of Klasies River and examines relationships between changing southern African environments and Middle Stone Age settlement.
| Teresa Rito et al. | Scientific Reports | 2019-03-18
Uses mitochondrial evidence to infer human movement from southern toward eastern Africa during humid conditions shortly before major dispersals beyond the continent.
| Stefania Vai et al. | Scientific Reports | 2019-03-05
Recovers an ancient mitochondrial lineage from Neolithic Libya and provides genetic evidence concerning population connections during the Green Sahara.
| Thibaut Caley et al. | Nature | 2018-07-09
Provides a two-million-year hydroclimate record for southeastern Africa and shows that environmental histories differed substantially among African regions important to human evolution.
| Multiple authors | Quaternary International | 2018-03-25
Uses small mammals from Klasies River to reconstruct southern African environments during Marine Isotope Stage 5 and Middle Stone Age human occupation.
| Henry F. Lamb et al. | Scientific Reports | 2018-01-18
Presents a 150,000-year terrestrial climate record from northern Ethiopia supporting repeated periods when environmental conditions may have facilitated modern human dispersal from Africa.
| Multiple authors | Nature Ecology & Evolution | 2018
Reconstructs environmental conditions surrounding the Oldowan-Acheulean archaeological record in southern Africa and broadens understanding of early hominin ecological tolerances.
| Multiple authors | Journal of African Earth Sciences | 2017-12
Dates fossil and sedimentary records from Egyptian oases, helping reconstruct humid episodes and human occupation possibilities within today's Sahara.
| Eleanor M. L. Scerri | Evolutionary Anthropology | 2017
Reviews the North African Middle Stone Age and emphasizes the region's changing deserts, savannas, waterways, and population connections in Homo sapiens evolution.
| Multiple authors | Palaeogeography, Palaeoclimatology, Palaeoecology | 2016-05-01
Examines occupational intensity at Klipdrift Shelter during the Howiesons Poort and compares human activity with environmental and coastline changes.
| Multiple authors | PLOS ONE | 2016
Uses stable-isotope and faunal evidence from southern African archaeological sites to test proposed relationships among environmental change, resource use, and early human innovation.
| Matt Grove | Journal of Human Evolution | 2015
Uses Lake Tana as a case study to explore whether repeated environmental variability selected for greater behavioral plasticity and thereby enhanced later human dispersal capacity.
| Christian A. Tryon and J. Tyler Faith | Current Anthropology | 2013-12-13
Reviews technological and ecological variability during the eastern African Middle Stone Age and discusses implications for Homo sapiens adaptation and dispersal.
| Martin Ziegler et al. | Nature Communications | 2013-05-21
Compares southern African archaeological innovations with paleoclimate records and identifies temporal associations between behavioral changes and episodes of rapid climate change.
| Curtis W. Marean | Journal of Human Evolution | 2010
Reviews evidence from Pinnacle Point Cave 13B concerning coastal resource use, shellfish exploitation, climatic refugia, and the origins of modern human behavior.
| Zenobia Jacobs et al. | Science | 2008-10-31
Establishes ages for major Middle Stone Age industries in southern Africa, allowing behavioral developments to be compared more accurately with paleoclimate records.
Dispersal Corridors: Sahara, Arabia, Levant, and Beyond Africa
| Huw S. Groucutt | Quaternary Science Reviews | 2026-07-01
Reassesses Homo sapiens dispersal beyond Africa and examines ecological flexibility, demographic expansion, climatic opportunities, and problems with simple behavioral-revolution models.
| Marisa Borreggine et al. | Quaternary Science Reviews | 2026-06-01
Models sea levels, currents, winds, and migration costs to reconstruct possible Homo sapiens dispersal routes from Sunda toward Sahul between 65,000 and 45,000 years ago.
| Francesco S. R. Pausata et al. | Quaternary Science Reviews | 2023-12-01
Models how Green Sahara conditions altered climate extremes far to the south and considers consequences for hominin dispersal through south-central Africa.
| Multiple authors | Science Advances | 2023
Reviews environmental, archaeological, and paleohydrological evidence indicating that the Levant repeatedly provided viable routes for human dispersal out of Africa.
| Multiple authors | Communications Earth & Environment | 2022-01-13
Shows intensified Mediterranean organic-carbon burial during repeated Green Sahara periods, recording major changes in African rainfall and runoff relevant to dispersal corridors.
| Bienvenido Martínez-Navarro et al. | L'Anthropologie | 2022
Reassesses the ecological setting of the earliest hominin dispersal from Africa and considers environmental corridors connecting African and Eurasian habitats.
| Juan Cruz Larrasoaña | Oxford Open Climate Change | 2021-10-22
Reviews West African monsoon penetration during repeated Green Sahara periods and its potential importance for long-term human and animal connectivity across northern Africa.
| Robert M. Beyer et al. | Nature Communications | 2021-08-24
Models climatic windows favorable for Homo sapiens migrations out of Africa during the past 300,000 years using reconstructed rainfall and environmental thresholds.
| Multiple authors | Journal of Anthropological Archaeology | 2021-06
Reconsiders Homo sapiens occupation of Arabia during Marine Isotope Stage 5 and emphasizes repeated population expansions and contractions across environmentally dynamic landscapes.
| Huw S. Groucutt et al. | Nature | 2021
Documents at least five hominin expansions into Arabia during brief humid phases over the past 400,000 years, directly linking occupation opportunities with reduced aridity.
| Gili Comay, Lior Weissbrod and Tamar Dayan | Journal of Human Evolution | 2021
Uses micromammals from Manot Cave to model changing local environments during periods important to Neanderthal and Homo sapiens occupation of the Levant.
| Multiple authors | Frontiers in Earth Science | 2021
Reviews southern Arabian stalagmite records documenting extreme wet and dry phases that affected human dispersal opportunities and later societal development.
| Multiple authors | Journal of Human Evolution | 2020
Uses micromammals from Misliya Cave to reconstruct climatic variability during early Homo sapiens expansion into the Levant.
| Huw S. Groucutt et al. | Quaternary International | 2019-05-10
Examines stone technology at Skhul Cave and its implications for Homo sapiens dispersal into Southwest Asia during favorable environmental intervals.
| Multiple authors | Journal of Human Evolution | 2019
Uses Manot Cave speleothems to reconstruct Levantine rainfall and vegetation during periods when Neanderthals and Homo sapiens occupied the region.
| Multiple authors | L'Anthropologie | 2019
Proposes an alternative ecological and geographic scenario for early human expansion beyond Africa and evaluates possible routes through southwestern Asia.
| Mohammed I. El-Shenawy et al. | Quaternary Science Reviews | 2018-05-15
Uses Egyptian speleothems to document wetter Green Sahara phases that may have opened migration corridors across normally hyperarid regions.
| Huw S. Groucutt et al. | Nature Ecology & Evolution | 2018
Reports a Homo sapiens fossil from Al Wusta, Saudi Arabia, demonstrating human occupation of Arabia during a period when orbital forcing produced much wetter landscapes.
| Axel Timmermann and Tobias Friedrich | Nature | 2016-09-21
Models how orbital changes altered rainfall, vegetation, sea level, and migration corridors and may have paced repeated human movements within and beyond Africa.
| Hugo Reyes-Centeno et al. | Journal of Human Evolution | 2015-10
Tests alternative modern-human dispersal models using biological variation and considers how different migration routes relate to geographic and environmental barriers.
| Multiple authors | Quaternary International | 2015-09-24
Synthesizes Arabian paleoclimate records showing repeated orbitally paced humid phases that could have provided windows for human movement through the peninsula.
| Multiple authors | Quaternary International | 2015-09-24
Uses multiple climate models to reconstruct repeated greening of Arabia and identify periods when normally arid landscapes became suitable for human occupation.
| Multiple authors | Quaternary International | 2015-09-24
Uses satellite data and GIS to map ancient Arabian rivers, lakes, and wetlands that could have supplied freshwater corridors for Pleistocene hominin dispersal.
| Multiple authors | Quaternary International | 2015-09-24
Reconstructs dune accumulation in the Rub' al-Khali to establish when Arabia's great desert acted as a migration barrier or became stabilized under wetter conditions.
| Matt Grove | Quaternary International | 2015-05-22
Examines how paleoclimatic variability and evolved behavioral plasticity may have influenced the timing and success of early Homo sapiens dispersals.
| Huw S. Groucutt et al. | Evolutionary Anthropology | 2015
Reviews fossil, archaeological, genetic, and environmental evidence for Homo sapiens dispersals beyond Africa and argues against a single simple migration model.
| Multiple authors | Quaternary International | 2013-06-25
Reviews Middle Palaeolithic climate records across the Sahara and Arabia to determine when deserts were barriers versus potential corridors for hominin dispersal.
| Multiple authors | Quaternary International | 2012-07-26
Evaluates geological, climatic, and environmental constraints on Early-to-Middle Pleistocene Homo movements from East Africa into Arabia, the Mediterranean, and Eurasia.
| Multiple authors | Quaternary International | 2012
Reviews successful and unsuccessful Pleistocene human dispersals from North Africa and considers the roles of climate, geography, population size, and ecological corridors.
| Jordi Agustí and David Lordkipanidze | Quaternary Science Reviews | 2011-06
Examines how African-like the environments encountered by the first hominins outside Africa actually were and how ecological differences affected dispersal.
| Ahuva Almogi-Labin | Journal of Human Evolution | 2011-04
Reconstructs eastern Mediterranean climate around the Early-to-Middle Pleistocene transition and discusses environmental conditions affecting hominin expansion into Eurasia.
| Amos Frumkin, Ofer Bar-Yosef and Henry P. Schwarcz | Journal of Human Evolution | 2011-04
Reconstructs Levantine glacial-interglacial water availability and argues that changing hydrology influenced Homo sapiens and Neanderthal migration and occupation.
| Anne E. Osborne et al. | Proceedings of the National Academy of Sciences | 2011
Reconstructs ancient Saharan river systems and argues that now-vanished waterways provided ecological corridors for humans and other species across North Africa.
| Amanuel Beyin | International Journal of Evolutionary Biology | 2011
Reviews Late Pleistocene dispersal from Africa, integrating archaeological, environmental, climatic, geographic, and genetic evidence for alternative migration routes.
| Multiple authors | Journal of Human Evolution | 2011
Examines environmental and climatic change in the Upper Jordan Valley during a period of Lower Pleistocene human occupation.
| Stephen L. Carto et al. | Journal of Human Evolution | 2009-02
Examines whether the major Homo sapiens expansion from Africa coincided with climatic deterioration and the onset of colder Ice Age conditions.
Eurasian Archaic Humans, Neanderthals, Denisovans, and Early Settlement
| Masoud Yousefi et al. | Communications Earth & Environment | 2026-08-25
Tests the hypothesis that climate fragmented Neanderthal habitat before extinction and reports that broad habitat connectivity may have persisted despite major climatic fluctuations.
| Antonio Rosas et al. | Quaternary Science Reviews | 2026-06-01
Reviews Middle Pleistocene European hominin evolution, population structure, geographic fragmentation, and evolutionary change during repeated glacial-interglacial climatic cycles.
| Ariane Burke et al. | Quaternary Science Reviews | 2026
Compares Neanderthal and Homo sapiens population geography during Marine Isotope Stage 3 to investigate resilience, refugia, habitat shifts, and population replacement under changing climates.
| Michael K. Gagan et al. | Communications Earth & Environment | 2025-12-08
Uses speleothem records from Flores to identify increasing summer aridity before the disappearance of Homo floresiensis and examines how declining rainfall affected local ecosystems and prey resources.
| Christian Sánchez-Bandera et al. | Journal of Human Evolution | 2025-12
Reconstructs cool, wet woodland conditions associated with early Homo at Sima del Elefante, demonstrating occupation of western Europe under environments unlike simple savanna models.
| Attila J. Trájer | Journal of Human Evolution | 2025-10
Explores Denisovan paleohabitats and environmental pathogen pressures as possible background factors affecting adaptive genetic introgression into later human populations.
| Liz Charton et al. | Quaternary Science Reviews | 2025-07-01
Reconstructs climate and vegetation during the Middle-to-Upper Palaeolithic transition in the southwestern Mediterranean and evaluates environmental contexts surrounding human population changes.
| Trenton W. Holliday et al. | American Journal of Human Biology | 2025
Reassesses Neanderthal responses to cold stress by integrating evidence from anatomy, physiology, technology, clothing, shelter, and energetic requirements.
| Jinbo Zan et al. | Nature Communications | 2024-11-27
Links mid-Pleistocene aridification and increasingly open landscapes with changing opportunities for hominin dispersal across parts of Eurasia.
| Attila J. Trájer | Archaeological and Anthropological Sciences | 2024-04-27
Models the climatic environments occupied by Homo heidelbergensis in Europe to evaluate ecological tolerance and resilience across changing Pleistocene conditions.
| Peter M. Yaworsky, Emil S. Nielsen and Trine K. Nielsen | Scientific Reports | 2024-04-02
Reconstructs the climatic niche of western Eurasian Neanderthals between about 145,000 and 30,000 years ago and examines changes in suitable habitat through time.
| Multiple authors | Historical Biology | 2024
Reconstructs the landscape surrounding Homo erectus at Sangiran, Java, examining rainfall, monsoon conditions, vegetation, water availability, and sea-level change.
| Benjamin Albouy et al. | Quaternary Science Reviews | 2024
Evaluates how stadial and interstadial climatic changes altered habitat suitability for Europe's final Neanderthal populations.
| Attila J. Trájer | Quaternary Science Reviews | 2023-06-15
Models the development of the Neanderthal ecological niche and examines how changing climates influenced habitat exploitation across Europe and western Asia.
| Juan Manuel López-García et al. | Quaternary Science Reviews | 2022
Uses small vertebrates to reconstruct temperatures and environments during periods of Neanderthal and modern-human presence in northeastern Iberia.
| Juha Saarinen et al. | Quaternary Science Reviews | 2021-09-15
Reconstructs Pliocene-to-Middle-Pleistocene climate in Spain's Guadix-Baza Basin to examine environmental conditions associated with early human occupation of western Europe.
| Juan Manuel López-García et al. | Journal of Human Evolution | 2021-01
Uses fossil rodents to reconstruct Middle Pleistocene temperature and precipitation in the southwestern Mediterranean and evaluate environmental conditions for early human occupation.
| Hugues-Alexandre Blain et al. | Journal of Human Evolution | 2021
Uses amphibians and reptiles to refine the environmental reconstruction of Dmanisi, one of the earliest well-documented hominin sites outside Africa.
| Axel Timmermann | Quaternary Science Reviews | 2020-06-15
Quantitatively compares abrupt climate change with competition and interbreeding as possible contributors to Neanderthal population decline and extinction.
| Fahu Chen, Frido Welker, Chuan-Chou Shen et al. | Nature | 2019-05-01
Reports a Denisovan-related mandible from the Tibetan Plateau, showing that archaic humans occupied high-altitude environments long before modern Tibetan populations.
| Marcin Szymanek and Marie-Anne Julien | Quaternary Science Reviews | 2018-10-15
Examines Central European settlement through Early and Middle Pleistocene climatic cycles and finds local resource availability was often more important than temperature alone.
| Stephen Wroe et al. | Proceedings of the Royal Society B | 2018
Uses biomechanical simulations to investigate whether Neanderthal facial anatomy reflects respiratory adaptations to cold and high energetic demands.
| Multiple authors | Quaternary Science Reviews | 2014
Uses fossil amphibians and reptiles from Dmanisi to reconstruct temperature, rainfall, and habitats occupied by some of the earliest Eurasian hominins.
| Multiple authors | Quaternary Science Reviews | 2011-10
Reconstructs the environment of the Kvemo-Orozmani region near Dmanisi and contributes to understanding landscapes encountered by early hominins in the Caucasus.
| Todd C. Rae, Thomas Koppe and Chris B. Stringer | Journal of Human Evolution | 2011-02
Challenges the commonly proposed idea that distinctive Neanderthal facial and sinus anatomy primarily represents adaptation to extremely cold environments.
| Karen Hardy | Quaternary Science Reviews | 2010-03
Examines climatic variability and plant-food distributions in Pleistocene Europe and considers their implications for Neanderthal and modern-human subsistence strategies.
| S. A. G. Leroy, K. Arpe and U. Mikolajewicz | Quaternary Science Reviews | 2010
Reconstructs vegetation and climatic limits affecting early Pleistocene hominin settlement of Europe and identifies relatively mild transitional environments as particularly important.
| Juan Manuel López-García et al. | Journal of Human Evolution | 2010
Uses small vertebrates from Gran Dolina to reconstruct Early-to-Middle Pleistocene environments and evaluate climatic conditions during western European human expansion.
| Multiple authors | Quaternary International | 2010
Reconstructs the Dmanisi environment from fossil plants, providing evidence for the vegetation and climate experienced by early Eurasian Homo.
Reviews anatomical, physiological, and energetic evidence concerning the extent to which Neanderthals were biologically adapted to cold Pleistocene climates.
Human Biological and Behavioral Adaptation
| Navas-Martín et al. | Environmental Research | 2024-07-01
Reviews human biological and behavioral adaptations to heat and provides a framework useful for understanding thermoregulatory pressures throughout human evolutionary history.
| Mark D. Lucock | American Journal of Biological Anthropology | 2023
Reviews how UV radiation, vitamins, genetics, diet, and geographic expansion interacted during the evolution of human pigmentation.
| Nina G. Jablonski | Pigment Cell & Melanoma Research | 2021
Reviews interactions among ultraviolet radiation, pigmentation genes, diet, clothing, migration, and culture in shaping the evolution of human skin color.
| Multiple authors | Scientific Reports | 2021
Combines skeletal and genomic evidence to investigate biological adaptation to cold among Indigenous inhabitants of Tierra del Fuego.
| Multiple authors | Experimental Physiology | 2020
Uses human-versus-horse endurance competitions to investigate whether humans possess unusually effective adaptations for sustained locomotion under hot environmental conditions.
| Multiple authors | International Journal of Environmental Research and Public Health | 2020
Reviews human thermoregulation and physiological acclimatization to heat, providing comparative insight into evolutionary adaptations to hot environments.
| Herman Pontzer | Current Biology | 2017-06-19
Reviews locomotor economy, endurance, energetics, and mobility in human evolution and considers how Homo adapted to increasingly wide-ranging foraging strategies.
| Lorna G. Moore | Quaternary International | 2017
Reviews physiological and genetic adaptations that allow human populations to survive chronic hypoxia at high elevations in Tibet, the Andes, and other regions.
| Jian Yang et al. | Proceedings of the National Academy of Sciences | 2017
Identifies genetic signatures associated with Tibetan high-altitude adaptation, illustrating natural selection generated by chronic hypoxia in an extreme climatic environment.
| Multiple authors | Molecular Biology and Evolution | 2017
Investigates functional effects of Tibetan EPAS1 variation and the genetic mechanisms underlying human physiological adaptation to oxygen-poor high-altitude environments.
| Daniel E. Lieberman | Comprehensive Physiology | 2015
Reviews the evolutionary connections among bipedal locomotion, endurance activity, sweating, reduced body hair, and human heat-loss capabilities.
| Laura Attwell, Kris Kovarovic and Jeremy Kendal | Journal of Anthropological Sciences | 2015
Reviews possible functions of fire during the Plio-Pleistocene and considers fire use as a form of ecological niche construction that altered human selective environments.
| Emilia Huerta-Sánchez et al. | Nature | 2014-07-02
Shows that a Denisovan-like genetic variant of EPAS1 contributed to high-altitude adaptation among Tibetans, illustrating how archaic introgression aided human adaptation to extreme environments.
| Multiple authors | Nature Communications | 2014
Finds evidence that population admixture contributed to genetic adaptation to Tibetan high altitude, demonstrating how migration and selection interacted in extreme environments.
| William R. Leonard and Peter T. Katzmarzyk | Human Evolutionary Biology | 2012
Reviews the influences of temperature, nutrition, energetics, and ecological conditions on geographic and evolutionary variation in human body size and proportions.
| Hirosato Fukase et al. | American Journal of Physical Anthropology | 2012
Examines geographic differences in prehistoric Jomon body form and their relevance to climatic adaptation, ecogeographic rules, and human morphological variation.
| Multiple authors | Molecular Genetics and Metabolism | 2012
Investigates metabolic traits associated with Tibetan high-altitude adaptation and the physiological consequences of long-term exposure to hypoxic environments.
| Graeme D. Ruxton and David M. Wilkinson | Journal of Human Evolution | 2011-08
Revisits thermoregulatory models of extinct hominins and investigates whether Homo erectus could have sustained endurance activity in hot environments.
| Yuhua Peng et al. | Molecular Biology and Evolution | 2011
Conducts a genome-wide search for natural-selection signals among Tibetans and identifies genetic pathways involved in adaptation to chronic high-altitude hypoxia.
| Nina G. Jablonski and George Chaplin | Proceedings of the National Academy of Sciences | 2010
Explains the evolution of human skin pigmentation as an adaptation to geographic differences in ultraviolet radiation, folate protection, and vitamin D production.
| Tiina M. Mäkinen | Frontiers in Bioscience | 2010
Reviews different forms of human cold adaptation, including metabolic, circulatory, morphological, and acclimatization responses to repeated low-temperature exposure.
| Tatum S. Simonson et al. | Science | 2010
Identifies genetic evidence for Tibetan high-altitude adaptation and demonstrates strong recent natural selection associated with low atmospheric oxygen.
| Xin Yi et al. | Science | 2010
Uses exome sequencing to identify genes under strong selection among Tibetans, linking human evolutionary adaptation to long-term residence at high altitude.
| Michael J. Tilkens et al. | Journal of Human Evolution | 2007-09
Experimentally evaluates Allen's rule by testing how differences in limb proportions affect heat retention and thermoregulation.
| Dennis M. Bramble and Daniel E. Lieberman | Nature | 2004-11-18
Reviews anatomical traits suggesting that endurance running became important during Homo evolution, potentially facilitating mobility and foraging in hot open environments.
| Nina G. Jablonski and George Chaplin | Journal of Human Evolution | 2000
Presents a major evolutionary model relating global ultraviolet radiation patterns to the evolution and geographic distribution of human skin coloration.
| Christopher B. Ruff | Journal of Human Evolution | 1991-08
Examines associations between climate and hominin body shape, emphasizing thermoregulatory advantages of different body proportions in hot and cold environments.
