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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

Octopus shows unique hunting, social and sexual behavior

The larger Pacific striped octopus exhibits unusual hunting tactics, displaying subtle tap-like movements to startle prey. It also displays high levels of sociality, forming groups of up to 40 individuals and engaging in cooperative behaviors such as sharing meals.

It takes two to court

Stowers researchers identified two classes of pheromone receptors that help male mice detect female presence and ovulation, essential for triggering the mating process. The findings provide new insight into how the mammalian brain processes sensory information like pheromones to elicit courtship behaviors.

Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Mapping the mind of a mating male

Researchers reconstructed the neuronal circuits of an adult male nematode to understand how sensory neurons interpret signals from the environment and translate them into mating behavior. The comprehensive map, known as a connectome, reveals various classes of neurons involved in locomotion, posture, and insemination.

Apple AirPods Pro (2nd Generation, USB-C)

Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.

Critical brain areas for sex hormone to induce diseases

The study found that perinatal exposure to estrogen-like compounds may be associated with a host of health problems. The researchers aim to review the latest advances in morphological definition, developmental mechanisms, and environmental factors that can influence the development of the sexually dimorphic nucleus.

No kissing or singing in the rain

Researchers found that three insect species altered their mating behaviors in response to falling air pressure, which may reduce injury and death. The study suggests insects are adapted to respond to potential bad weather, impacting not only individual animals but also ecological communities.

Insects modify mating behavior in anticipation of storms

Researchers found insects adjust courtship and calling behaviors in response to changing air pressure, reducing risk of injury during high winds and rain. The study suggests these modifications may help insects predict adverse weather conditions, allowing them to modify their mating behavior accordingly.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

Men, women lie about sex to match gender expectations

A new study found that people tend to distort their sexual behavior to conform to cultural expectations of masculinity and femininity. In contrast, non-sexual behaviors are not subject to the same level of scrutiny, with individuals more willing to admit to stereotypes for their gender in these areas.

Low-pitched song indicates fairy-wren size

A new international study shows that a male fairy-wren's low-pitched song is linked to its body size, providing insight into reliable communication between animals. The study, led by University of Melbourne researcher Dr Michelle Hall, found that larger males sing at lower pitches.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

European dung-fly females all aflutter for large males

In European dung flies, larger males are preferred by females for mating, leading to increased copulation frequency and potentially larger testes. This difference in mating behavior is attributed to female preference, but the underlying evolutionary cause remains unclear.

Sex-specific behaviors traced to hormone-controlled genes in the brain

A recent study on male and female mice has identified hormone-controlled genes in the brain as the key drivers of sex-specific behaviors, including mating and parental care. The research found that these genes can be individually manipulated to alter behavior, suggesting a modular control of sex-specific traits.

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Adolescent sex linked to adult body, mood troubles, in animal study

Researchers found that adolescent male hamsters showed signs of depressive-like behaviors, lower body mass, and changes in brain cells after early-life sexual experience. This suggests that sex during adolescence may be interpreted by the body as a stressor, leading to lasting negative effects on adult body and mood.

Birdsong independent of brain size

A new study found that the sex differences in the brains of songbirds vary according to their social status. Contrary to previous assumptions, dominant males' larger brain areas controlling song behaviour do not explain their dominance. Instead, gene activity and neural connections play a more significant role

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Mating rivalry among furred and feathered: Variety is spice of life

A Canadian study found that flexibility in mating rituals is crucial for reproductive success when males outnumber females. Researchers analyzed hundreds of investigations on mating trends across various species, finding significant flexibility in mating behavior and customs.

Human gender roles influence research on animals

Researchers at Lund University found that terms describing male and female traits in animal sexual conflicts vary, with males often described in active terms and females in passive ones. This bias can lead to incorrect interpretations of results.

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Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.

'Peter Pan' apes never seem to learn selfishness

Researchers found bonobos never seem to learn how not to share, whereas chimps do as youngsters but grow out of it. Bonobos' behavior is shaped by their environment's abundance, leading to a 'Peter Pan world'. They shared like juveniles even after reaching adulthood, unlike chimps.

Same-sex behavior seen in nearly all animal groups, review finds

A new review of existing research reveals same-sex behavior is a nearly universal phenomenon in the animal kingdom. However, researchers have focused primarily on understanding the genetic and neural mechanisms behind this behavior rather than its potential evolutionary consequences.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Mating that causes injuries

Researchers found that males' mating organs with barbs cause severe injuries to females, but also increase fertilization success rates, outcompeting males with shorter barbs

In the absence of sexual prospects, parasitic male worms go spermless

A team of scientists discovered that parasitic nematode worms, Steinernema longicaudum, do not produce sperm when females are absent. This unusual behavior is thought to be related to the worms' life history and social circumstances, where males may need to wait for a mate to mature before reproducing.

Daily alcohol use causes changes in sexual behavior, new study reveals

A study by Penn State researchers found that daily alcohol consumption causes changes in male fruit fly sexual behavior, including increased arousal and decreased inhibition. The research also discovered that repeated exposure to ethanol leads to behavioral sensitization, where flies engage in more inter-male courtship.

For the fruit fly, everything changes after sex

Researchers at the Research Institute of Molecular Pathology have identified a molecular switch responsible for the behavioral changes in female fruit flies after mating. The discovery could lead to new approaches for controlling reproductive behaviors in agricultural pests and human disease carriers.

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Species still have more viable offspring if they can choose their best mate

A new study by the University of Georgia shows that when animals cannot choose their preferred mate, females and males find ways to compensate, increasing the chances of their offspring's survival. This supports the Compensation Hypothesis, which suggests individuals can pass on genes even under less-than-ideal circumstances.

Sex is thirst-quenching for female beetles

A study by Dr. Martin Edvardsson found that dehydrated female beetles mate more frequently with males to obtain water from their seminal fluid, a strategy that benefits the male by extending the time before fertilization competition resumes. The research sheds new light on the role of 'nuptial gifts' in insect courtship and mating.

Elephantnose fish 'see' with their chin

The Peters' elephantnose fish uses its electric sense to detect the capacitative properties of objects, allowing it to distinguish between living and dead organisms. It can also measure distances with a precision of several millimeters and perceive complex images of its surroundings.

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Electric fish in Africa could be example of evolution in action

Researchers have discovered electric fish in Africa with the same DNA but different electric signals and appearances, sparking hope that they are on the verge of forming two separate species. The findings provide a rare example of sympatric speciation, where animals from the same geographic location diverge into distinct groups.

Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

Like mother, like cubs

A study by Michigan State University zoology professor Kay Holekamp found that high-ranking hyena mothers pass on high levels of androgens to their offspring, making them more aggressive and sexually vigorous. This unique trait helps females secure food resources and dominate their social group.

Attractive birds more immune against bird flu

Research suggests that birds with large forehead spots, indicating good health, are more likely to produce antibodies against Newcastle virus. This study provides insight into the evolutionary pressures driving the development of attractive features in animals.

Olfactory input dominates reproductive behavior in mice

Researchers found that almost all neurons feeding into the LHRH-making region of the hypothalamus originated in the mouse nose. Mice with compromised olfactory function show dramatically impaired mating behavior, highlighting the essential role of olfactory activity in eliciting male mating behavior.

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Genes exert powerful effect on sexual behavior

Researchers found that genetic manipulation of the fruitless gene in females led to classic male sexual behavior patterns, including courtship dances. The study suggests a strong biological basis for sexual behavior and orientation in animal species.

Sexual frustration and learning in fruit flies

Researchers found that Drosophila males can be trained to avoid certain female pheromones associated with past failures in mating. This study demonstrates a complex learning mechanism involving hydrocarbon olfactory cues and memory consolidation.

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GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

New research shows in the animal world, it pays to be an imposter

Researchers found that small male cuttlefish that change their appearance to look like females are successful in fertilizing eggs at a rate of 60 percent. The study used DNA fingerprinting and observed the cuttlefish's behavior over ten days, revealing this unique mating strategy

For a male sand goby, playing 'Mr. Mom' is key to female's heart

In an experiment, male sand gobies were found to work harder at building nests and taking care of eggs when females were present, demonstrating 'courtship parental care'. Unaccompanied males were more likely to abandon their parental duties or even eat their own eggs.

Biology behind homosexuality in sheep, study confirms

Researchers found an irregularly shaped cluster of nerve cells in the hypothalamus of the sheep brain associated with female mate preference. The study provides clues to the processes involved in development and regulation of heterosexual and homosexual behavior.

Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

An old, familiar love nest helps sexual success

A Cornell University study reveals that Pavlovian sexual conditioning, a process where external cues trigger anticipation of mating, significantly improves reproductive success in Japanese quail. The researchers found that breeding animals in familiar environments led to twice as many fertilized eggs compared to unfamiliar ones.

Fidelity is key mate-preference factor for both sexes

A study of 978 heterosexual residents found that physical attractiveness is not a primary factor in long-term relationships, while fidelity and good parenting qualities are highly valued. The researchers suggest that humans have evolved to play a sophisticated mating game, with similar characteristics being preferred in partners.

Women's sexual behaviors may be closer to men's than previously thought

A new study by Ohio State University researchers found that some reported gender differences in sexual behavior might be due to women being less than honest when surveyed. Women's answers were closer to men's in certain areas of sexual behavior when they thought lies could be detected, while men's answers didn't change as much.

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Nikon Monarch 5 8x42 Binoculars deliver bright, sharp views for wildlife surveys, eclipse chases, and quick star-field scans at dark sites.

On the nose

A new USC study suggests that humans lost the ability to detect pheromones due to a gene essential for vomeronasal organ function. The study found that mutations in this gene occurred around 40 million years ago, leading to the disappearance of the gene and subsequent loss of vomeronasal organ function in primates.

Death by color: Spiny spiders' bright stripes attract prey

Researchers discovered that brightly colored and patterned spiny spiders in Australia are more effective at catching prey due to their vibrant colors. The spiders use their colors to mimic food sources like flowers, attracting visually oriented insects.