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Life Sciences

Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.

447,757 articles | 2542 topics

Health and Medicine

Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.

431,843 articles | 751 topics

Social Sciences

Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.

260,756 articles | 745 topics

Physical Sciences

Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.

257,913 articles | 1552 topics

Applied Sciences and Engineering

Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.

225,386 articles | 998 topics

Scientific Community

Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.

193,043 articles | 157 topics

Space Sciences

Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.

29,662 articles | 175 topics

Research Methods

Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.

21,889 articles | 139 topics

Mathematics

Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.

3,023 articles | 113 topics

New documentation of dramatic climate changes at the end of the last ice age sheds light on the transition from nomadic hunter-gatherer to settlement and farming societies

Researchers reconstruct Land of Israel climate at end of last ice age using plant remains, revealing significant temperature and precipitation differences that impacted the transition from hunter-gatherer to settled agricultural societies. The study provides insights into the region's flora and its response to past climate change.

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Diet restricted size of hunter-gatherer societies

A recent study by McGill University researchers found that hunter-gatherer societies were limited by the seasonal availability of food, with groups in short-growing seasons requiring a high percentage of meat in their diets. This finding is supported by ethnographic observations and simulations using a mathematical model.

Model could help archeologists unearth new Pleistocene sites in Cyprus, suggesting that more historic hunter-gatherer activity on Eastern Mediterranean islands than previously suspected

A new model has been developed to help archeologists uncover new Pleistocene sites in Cyprus, revealing more evidence of historic hunter-gatherer activity on the island. The study suggests that there may have been more human activity on Eastern Mediterranean islands during the last ice age than previously thought.

Small-scale foragers left more than footprints on the landscape

Researchers used satellite data to identify areas in coastal southwest Madagascar where indigenous foragers altered their surroundings, showing a 17% human impact. The study found subtle but widespread changes in soil capacity to absorb water and vegetation distribution.

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Meat-heavy diets restricted hunter-gatherer population sizes

A new study by the ICTA-UAB establishes that populations of hunter-gatherer groups with strong seasonal dependence on meat had fewer people per square kilometer than those relying on abundant plant foods. This result is based on a complex set of calculations showing how diet composition influenced population density.

Study shows evidence of beer drinking 9,000 years ago in Southern China

A new study reveals evidence of beer drinking 9,000 years ago in southern China, with ancient pots found at a burial site containing residues consistent with beer fermentation. The discovery suggests that ritualized drinking played a significant role in forging social relationships and cooperation among ancient communities.

This 5,000-year-old man had the earliest known strain of plague

Scientists discovered the oldest strain of Yersinia pestis in a 20- to 30-year-old man from 5,000 years ago. The ancient bacteria was less contagious and deadly than its medieval version, transmitted primarily through animal bites. This finding challenges long-held theories on the development of human civilization in Europe and Asia.

An ancient economy

A team of archaeologists has discovered that the Chumash Indians in California were using shell beads as currency around 2,000 years ago. The team's findings, published in the Journal of Anthropological Archaeology, challenge long-held assumptions about the origins of money in the Americas.

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Early big-game hunters of the americas were female, researchers suggest

A 9,000-year-old female hunter burial in the Andes Mountains overturns the long-held 'man-the-hunter' hypothesis, revealing that female participation in big-game hunting was nontrivial. Statistical analysis suggests that 30-50% of hunters in these populations were female, contradicting recent societal norms.

Malnutrition among a hunter-gatherer group

A San group in Namibia faces malnutrition due to a dysfunctional local food system, with no agency over food sources and limited access to traditional foods. The researchers recommend context-specific solutions, including eliminating movement restrictions and supporting traditional foodways to supplement diets with key nutritional groups.

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Parasites and the microbiome

Researchers found that parasite infection was strongly associated with the overall composition of the microbiome, which could accurately predict a person's country and lifestyle. The study also discovered that the presence of four soil-transmitted gut parasites tended to co-occur at a higher rate than chance.

The roots of a staple crop

A new study by UC Santa Barbara researcher Douglas J. Kennett and collaborators found that maize had become a staple grain in the Americas 4,700 years ago, exceeding what is considered a staple grain. By 4,000 years ago, maize was persistently used as a staple, continuing through the Classic Maya period until today.

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Stone-Age social networks

A study of ostrich eggshell bead exchange reveals that relationships among hunter-gatherer groups existed across hundreds of kilometers in late Middle Stone Age southern Africa. The size of the network provided access to high ecological diversity and offered a social strategy against scarcity.

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Squatting or kneeling may have health benefits

A new study suggests that squatting and kneeling may be important resting positions in human evolution, as they involve higher levels of muscle activity. This could reduce the health risks associated with sedentary behavior, particularly cardiovascular disease.

Hunter-gatherer networks accelerated human evolution

A study of Agta hunter-gatherers in the Philippines revealed that their complex social networks accelerated cultural evolution and innovation. The researchers found that sharing knowledge and combining individual insights led to faster development of medicinal products, with an average of 250-500 rounds of interactions required.

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First ancient DNA from West/Central Africa illuminates deep human past

The study reveals new insights into the origins of Bantu languages, previously unknown populations, and human migration patterns. The ancient DNA sequences from west and central Africa enhance our understanding of the deep ancestral relationships among populations in sub-Saharan Africa.

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Hunter-gatherers agree on what is moral, but not who is moral

Researchers found that Hadza hunter-gatherers in Tanzania agree on the importance of generosity and hard work in moral character, but disagree on who exemplifies these traits. The study suggests that this nomadic way of living may have driven the evolution of morality.

Farmers have less leisure time than hunter-gatherers, study suggests

A study of Agta hunter-gatherers in the Philippines found that those who adopt farming work around 10 hours a week longer than their forager neighbours, impacting women's lives disproportionately. The research suggests that agriculture may not represent progress as previously thought.

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First Anatolian farmers were local hunter-gatherers that adopted agriculture

A new study confirms that Anatolian hunter-gatherers adopted farming and were later descended by early Anatolian farmers. The findings provide genetic support for archaeological evidence that local hunter-gatherers developed agriculture independently, rather than being introduced by a large migration of farmers.

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A shared past for East Africa's hunter-gatherers

Genomic analysis reveals East Africa's hunter-gatherers diverged from a shared ancestry around 20,000 years ago, driven by infectious disease and dietary adaptations. This study provides insight into the genetic diversity of African populations, shedding light on the role of diet and disease in shaping human evolution.

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Is there a universal hierarchy of human senses?

A study conducted by researchers at the University of York found that cultures' emphasis on specific sensory experiences, such as music or pottery, affects their ability to communicate about different senses. This challenges the long-held assumption of a universal hierarchy of human senses.

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The origins of pottery linked with intensified fishing in the post-glacial period

A three-year study by researchers at BioArCh, the University of York, suggests that ceramic vessels were used by early hunter-gatherer ancestors to store and process fish, with an association remaining stable even after climate warming. The study reveals new insights into prehistoric food processing habits during the post-glacial period.

Pre-agricultural origins of bread in the Near East

Researchers found charred food fragments at a Natufian site in northeastern Jordan dating back to 14,600 years ago, exhibiting characteristics of bread-like products. The discovery suggests that bread was made 4,000 years before the emergence of agriculture, but noncereal foods remained a staple during the Natufian period.

Team sports have ancient roots

Researchers found evidence of coalitional play fighting among hunter-gatherer societies, suggesting it was a universal feature of human psychology. This type of play involved coordinated action and non-lethal physical force, mirroring skills used in lethal raiding.

Alcohol and fertility in hunter-gatherers

A study examines the relationship between alcohol and fertility in a hunter-gatherer society, finding low infant and juvenile mortality, slow growth, and high fertility at an early age. The Baka pygmy people of Cameroon exhibit a significant decrease in fertility since 2011, corresponding with the arrival of cheap alcohol.

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Odors are perceived the same way by hunter-gatherers and Westerners

A recent study found that Jahai speakers and Dutch individuals have similar emotional responses to odors, indicating universal perception. Despite their distinct vocabularies for smelling, both groups showed the same facial reactions to unpleasant smells, highlighting the universality of olfactory experience.

New research sheds light on prehistoric human migration in europe

The study confirmed two major migrations through southeastern Europe, with early farmers from Anatolia spreading westward and a steppe population replacing northern Europe's population. The region remained a genetic contact zone between East and West until the Bronze Age.

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Ancient DNA tells tales of humans' migrant history

A new study using ancient DNA analysis has found that human populations have been migrating and mixing extensively throughout history, with the Yamnaya people from Central Asia expanding rapidly to Europe, Britain, and beyond. The research also reveals a biased genetic exchange between farmers and hunter-gatherers in northern Europe.

Northern European population history revealed by ancient human genomes

An international team analyzed ancient DNA from 38 northern Europeans, uncovering that Scandinavia was settled via southern and northern routes. Agriculture arrived in northern Europe through migrating farmers and pastoralists. The study provides new insights into population dynamics of prehistoric northern Europe.

Hunter-gatherers have a special way with smells

A new study found that hunter-gatherer groups, such as the Semaq Beri, excel at naming odors with ease, while non-hunter-gatherer groups, like the Semelai, struggle. The researchers suggest that cultural practices may play a role in shaping olfactory cognition.

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Uncovering varied pathways to agriculture

A team of scientists and archaeologists has discovered a 15,000-year-old Natufian site in Jordan that pushes back the timeline for permanent settlement in the region. The site's early dates suggest that hunter-gatherers were more versatile than previously thought and had multiple pathways to agriculture.