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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

Helping fish get rid of the 'Ich'

USDA researcher David Straus found copper sulfate effective in controlling Ich and a fungus on catfish eggs, offering an inexpensive and safe solution for aquaculture. The treatment has potential for widespread use in fish ponds worldwide due to its ease of application and effectiveness.

Value-added sulfur scrubbing

A new method involves microbial sulfate reduction using an anaerobic bioreactor, reducing over 90% of sulfates in scrubbing water. The treated waste can be converted into elemental sulfur or metal sulfide nanoparticles for industrial use.

Optimizing climate change reduction

Researchers developed a new approach to determining the optimal distribution of sulfates in the stratosphere to achieve defined climate goals. The study found that uniformly distributed aerosols can minimize both temperature changes and hydrological cycle alterations, with potential reductions of up to 90% and two-thirds, respectively.

GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

Study finds black carbon implicated in global warming

A recent study conducted by a University of Iowa professor and his colleagues found that increasing the ratio of black carbon to sulfate in the atmosphere increases climate warming. Black carbon from diesel engine exhaust and cooking fires was found to be more efficient at warming than biomass burning plumes.

Researchers evaluate new bowel prep approaches

New studies suggest that adequate bowel preparation prior to colonoscopy can impact follow-up timetables. Researchers found that inadequate bowel preparation resulted in a recommended follow-up colonoscopy 17.1 months earlier than average.

August 2009 Geology and GSA Today media highlights

Researchers studied high-grade copper mineralization in porphyry Cu deposits, finding that fluid behavior correlates with emplacement depth of magmatic sources. Acoustic imaging revealed pressurized fluids in a subduction zone, explaining mechanical weakness and earthquake rupture processes.

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.

Origins of sulfur in rocks tells early oxygen story

Researchers propose alternative explanation for anomalous sulfur isotope composition in ancient rocks, suggesting early oxygen-rich atmosphere may have been present. Laboratory experiments show that organic material and thermal sulfate reduction can produce similar isotopic signatures.

Aerosols may drive a significant portion of arctic warming

Researchers at NASA found that aerosols are responsible for a significant portion of Arctic warming since 1976, with sulfates and black carbon playing critical roles. The study suggests aerosols may account for up to 45% of the observed warming, which is comparable to the impact of greenhouse gases.

Apple iPhone 17 Pro

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

Chondroitin slows progression and relieves symptoms of knee osteoarthritis

A randomized, double-blind, placebo-controlled study found that long-term administration of chondroitin sulfate can prevent joint structure degradation in patients with knee OA. The study also showed significant reductions in joint space loss, pain, and adverse events in the treatment group compared to the placebo group.

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.

Dirty smoke from ships found to degrade air quality in coastal cities

Researchers at UC San Diego found that ship smoke can be a significant contributor to poor air quality in coastal cities, particularly in California. The study reveals that high-sulfur fuel emissions from ships burning bunker oil can produce primary sulfate particles, which are especially fine and harmful to human health.

Arctic pollution's surprising history

A University of Utah study reveals that polar explorers saw an aerosol 'dry haze' in the late 1800s, likely generated by smelting and coal combustion. The haze was found to contain metallic particles, including vanadium and cobalt, consistent with heavy oil and coal combustion.

DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Melting snow provides clues for acidification

Researchers tracked sulfate and nitrate movement in forest soils during winter, finding most compounds were released in snowmelt. Organic soils acted as a sink for these compounds, with significant ammonium production indicating N mineralization was important.

Stroke study to add patients who cannot give immediate consent

A new study is expanding to include patients with severe strokes who cannot give informed consent, aiming to determine if early administration of magnesium sulfate improves patient outcomes. The trial has already enrolled over 250 patients and aims to answer a crucial question about the best approach to stroke treatment.

GQ GMC-500Plus Geiger Counter

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

New inhibitor has potential as cancer drug

A new heparanase inhibitor has shown promising results in animal models, indicating its potential as a cancer drug. The enzyme heparanase splits polysaccharides into shorter fragments, which can promote tumor growth. By inhibiting this enzyme, researchers hope to develop a new treatment for cancer.

Discovery could help stop malaria at its source -- the mosquito

Researchers discovered that heparan sulfate is a receptor for the malaria parasite, allowing it quick transport through the body. This finding could lead to an environmentally safe and inexpensive way to block infection in mosquitoes, preventing malaria spread without drug side effects.

Common preterm labor drug has more side effects than alternative

A new study from Stanford Medicine found that magnesium sulfate, commonly used to arrest preterm labor, has more mild to serious side effects than the alternative treatment nifedipine. The research suggests that physicians should consider side effects when choosing which drug to prescribe.

Alpharma presents positive pharmacokinetic study results

The study demonstrated similar release characteristics of the product to those found in previous studies of Alpharma's currently marketed KADIAN Capsules. The company is targeting an NDA filing for its abuse-deterrent product in the first half of 2008.

Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

Slow-release morphine reduces level of intractable cough

Researchers found slow-release morphine sulfate significantly reduced daily cough scores by 40% in patients with long-term, treatment-resistant chronic cough. The optimal dose for suppression lies between 5 and 10 mg twice daily, with common side effects including constipation and drowsiness.

Phase III trials of cellulose sulfate microbicide for HIV prevention closed

A Phase III trial of cellulose sulfate, a topical microbicide gel, has been halted due to preliminary results indicating an increased risk of HIV infection in women. The Independent Data Monitoring Committee will conduct a review of the data to better understand the findings and determine implications for future research.

Sugars in liver found to clear fats from the bloodstream

Studies found that heparan sulfate in the liver plays a crucial role in clearing triglycerides and cholesterol from the blood. The discovery could lead to new treatments for high blood-fat levels and related complications such as arthrosclerosis.

Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

Stratospheric injections could help cool Earth, computer model shows

A new study suggests injecting sulfates into the stratosphere could slow down global warming and provide more time to reduce greenhouse gas emissions. The approach has been shown to stabilize climate for up to 20 years, but geoengineering is not a panacea and mitigation alone can also address ocean acidification issues.

Novel protein complex enables survival in hostile environment

Scientists have discovered a novel protein complex that allows methanogens to survive in environments with sulfite, a toxic compound. The enzyme, coenzyme F420-dependent sulfite reductase, converts sulfite into sulfide, an essential nutrient for the organisms.

Celestron NexStar 8SE Computerized Telescope

Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.

Life on Mars? New data reveal places to search

Researchers found diverse surface materials, including hydrated minerals, which suggest water was common on Mars. The study suggests areas like Syrtis Major, Valles Marineris, and Terra Meridiani are strong candidates for future Mars missions.

The secret to longevity in tubeworms

Scientists discover that tubeworms release waste sulfate to stimulate sulfide-producing microbes, enabling their remarkable 250-year lifespan. This symbiotic relationship helps the worms thrive in deep-sea environments where nutrients are scarce.

January Geology and GSA Today media highlights

Research on Neoproterozoic low-latitude sedimentary rocks reveals that tropical oceans were likely very cold during the Cryogenian period, leading to widespread sea ice. In contrast, a Cretaceous alluvial sequence provides evidence of long-term amplification of the global hydrologic cycle and greenhouse climate signals.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Ice cores disagree on origin of White River ash deposit

Researchers drilled a complete 460-meter core through the ice to bedrock, capturing a climatological record preserved in the ice. The discovery of layers of non-volcanic pebbles and lack of ash layer contradict the current interpretation that Mount Churchill was the source of White River Ash deposits.

DepoDur found to be innovative option for postoperative pain relief

DepoDur offers a safe and effective alternative to traditional epidural analgesia, providing up to 48 hours of effective pain control without the need for continuous infusion. This single-shot epidural formulation has been shown to improve treatment of postoperative pain following major surgery.

Munching microbes could cleanse arsenic-contaminated groundwater

Researchers have discovered a link between sulfate and arsenic levels in groundwater, suggesting that adding sulfate can effectively sequester arsenic. This method could provide a simple yet reliable field test to identify safe drinking water from contaminated sources.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.

Sopping salts could reveal history of water on Mars

Researchers found that different magnesium sulfate salts contain varying amounts of water, which could provide insight into Mars' history. The proportion and distribution of these salts may hold clues about past climate changes and water presence on the planet.

Atmospheric compound is double-edged sword in climate change

Researchers at Ohio State University found that sulfuric acid combines with methanol to form methyl sulfate, which can contribute to cloud formation and trapping of heat. This interaction may have a significant impact on global climate change, but the conditions required for its formation are still not fully understood.

Apple MacBook Pro 14-inch (M4 Pro)

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

Surface treatments could make ready-to-eat products safer

A study found that acidified calcium sulfate is effective in killing Listeria on the surface of cooked products and preventing its regrowth. The treatment was shown to be safe and did not affect the taste or texture of the product, making it a potential solution for improving food safety.

Annals of Internal Medicine tip sheet, December 5, 2000

A cost-effectiveness study finds radiofrequency ablation effective in treating supraventricular tachycardia, improving quality of life and reducing hospital visits. However, the online availability of hydrazine sulfate, touted as a cancer treatment with few side effects, has raised safety concerns after a fatal case report.

Davis Instruments Vantage Pro2 Weather Station

Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.