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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 study shows legacy of DDT to lake ecosystems

A new study reveals that DDT persists in remote lakes at concerning levels half a century after its ban, impacting key aquatic species and potentially entire lake food webs. The study found high levels of DDT in modern sediments, similar to those found in previously sprayed areas of Canada and the U.S.

Fifty years later, DDT lingers in lake ecosystems

Researchers found elevated levels of DDT and its breakdown products in lake sediments, affecting zooplankton communities. The long-lived insecticide's persistence has altered aquatic ecosystems, with shifts towards more contaminant-tolerant species.

Apple iPhone 17 Pro

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

The Earth's rotation moves water in Lake Garda

A research team from Trento and Utrecht universities found that the Earth's rotation influences Lake Garda's water movement and deep water mixing. This effect contributes to the transport of oxygen, nutrients, and substances between the surface and deep layers.

Early lives of Alaska sockeye salmon accelerating with climate change

Climate change is speeding up Alaska sockeye salmon's growth rate in freshwater, causing them to migrate to the ocean faster. However, this shift may not benefit the species long-term, as it takes an extra year at sea, where they face increased competition with hatchery-raised salmon.

Mapping groundwater's influence on the world's oceans

Researchers at Ohio State University have created a near-global map of fresh submarine groundwater discharge, showing that nearly half of groundwater flows into tropical regions. The study also found that areas with active fault lines send more groundwater to the ocean than stable regions, and dry arid regions have limited discharge.

Evidence of multiple unmonitored coal ash spills found in N.C. lake

A new study finds high levels of coal ash contaminants in sediments from Sutton Lake, suggesting multiple unmonitored spills have contaminated the eastern North Carolina lake and potentially other lakes near coal ash ponds. The research highlights the risk of large-scale unmonitored spills occurring at coal ash storage sites nationwide.

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.

Harmful algal blooms research -- Fulbright US Scholar Award to New Zealand

David Schmale, a professor at Virginia Tech, has received a Fulbright US Scholar Program award to develop remote-sensing capabilities to detect and respond to harmful algal blooms in New Zealand. He will also create educational units for students to design and fabricate robots for environmental monitoring.

Aftershocks of 1959 earthquake rocked Yellowstone in 2017-18

A study found that the earthquakes were caused by subsurface movement of magma and fluid movement in Yellowstone. The swarm was divided into two clusters, one with Hebgen Lake aftershocks and another with a different origin. Researchers concluded that the events highlight the ongoing nature of earthquakes.

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.

Lake sediment records reveal recent floods in NW England (UK) unprecedented

A new study of UK lake sediment records has found that recent floods in Northern England were the largest in 600 years, highlighting the impact of climate changes. The research uses lake sediment records and river flow data to establish long-term flood frequency models, aiming to improve flood risk management in the UK.

Algal blooms in Lake Erie's central basin could produce neurotoxins

A new study detects the production of neurotoxins by cyanobacteria in Lake Erie's central basin, a region previously thought to be less prone to harmful algal blooms. The research finds that specific strains of Dolichospermum and microcystis can produce toxins capable of attacking the central nervous system.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

A new view of wintertime air pollution

A recent study found that targeting nitrogen oxides emitted by cars and power plants may increase harmful wintertime air pollution in the US West. Instead, limiting volatile organic compounds could be a more effective way to reduce particulate matter pollution.

Rice husks can remove microcystin toxins from water

Scientists at the University of Toledo discovered that rice husks can remove microcystin, a toxin released by harmful algal blooms, with up to 95% efficiency. The treatment uses organic rice husks treated with hydrochloric acid and heated to 250 degrees Celsius.

Chemical records in teeth confirm elusive Alaska lake seals are one of a kind

Scientists confirm Alaska lake seals, a distinct population from ocean-dwelling cousins, rely on freshwater food sources throughout their lives. The study provides critical baseline information for developing conservation strategies, particularly as the region faces proposed industrial developments and climate change.

Hippos, the animal silicon pumps

Hippos play a key role in transporting silicon from land to water through their faeces, influencing over 76% of the total silicon transported along the Mara River. This process is crucial for ecosystems like Lake Victoria, where a lack of silicon can lead to food shortages and ecosystem collapse.

Researchers find ice feature on Saturn's giant moon

A team of researchers led by Caitlin Griffith discovered a mysterious linear ice corridor on Titan's surface, which suggests the presence of past volcanic activity. The find sheds new light on Titan's unique atmospheric chemistry and potential for life

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C)

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Beware a glacier's tongue

Researchers at Hokkaido University used sonar to map the underwater shape of Grey Glacier, revealing a submerged terrace extending 100 meters beyond its visible portion. This unique structure is different from ocean-bound glaciers and can lead to huge chunks of ice falling off, posing a safety risk to humans in the vicinity.

Ritual offerings, sacrifice in ancient Tiwanaku state formation

Archaeological evidence uncovered at Khoa Reef suggests religious rituals, including animal sacrifice, played a crucial role in consolidating the ancient Tiwanaku state between 500-1100 CE. The findings, based on underwater excavations, provide new insights into the region's moral code and power structure.

Rise of religion pre-dates Incas at Lake Titicaca

Researchers have uncovered ancient ritual offerings near Lake Titicaca that pre-date the arrival of the Incas by several centuries. The findings suggest a more complex and ambitious spiritual system among the Tiwanaku people, who developed in the area between 500-1,100 AD.

Invasive crayfish sabotages its own success, study says

A new study published in Ecology found that rusty crayfish populations declined in lakes with mucky and sandy bottoms, while those with rocky substrates remained stable or increased. The research suggests that the invasive species sabotages its own success by using aquatic plants as shelters to avoid predators.

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.

Decision makers need contextual interactive guidance

A team of researchers developed an interactive program using trade-off diagrams to support decision-making in complex scenarios. The tool allows for compromises and balancing of competing interests, increasing decision quality with contextual information. However, interactivity also improves decision-making, but to a lesser extent.

Freshwater coastal erosion alters global carbon budget

A new study finds that shoreline erosion can transform freshwater wetlands from carbon-storage pools to carbon sources, with a large mismatch between accumulation and erosion rates. The researchers developed a model to assess the impact of freshwater coastal erosion on global carbon budgets.

Study shows arctic warming contributes to drought

A new study reveals that arctic warming contributes to drought in mid-latitude regions by reducing precipitation and weakening wind patterns. Researchers analyzed geological evidence from lakes and glaciers to estimate past dry conditions, finding that Wyoming experienced several thousand years of drought-like periods.

Sometimes it's not good to be green

The study estimates that global lake greening could increase methane emissions by 30-90% over the next century. This is attributed to human population growth, climate change, and increased stormwater runoff, which lead to eutrophication and oxygen depletion in lakes.

Microorganisms are the main emitters of carbon in Amazonian waters

A new study reveals the microbial food web in Amazonian waters, consisting of 20% of the whole Amazon, produces 10 times more CO2 than the classical food chain by decomposing organic matter. This accounts for most of the carbon circulating in lakes, floodplains, and wetlands.

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.

Droughts could hit aging power plants hard

A new study by Duke University finds that droughts and rising water temperatures will significantly impact US power plants' generating capacity. The researchers recommend replacing traditional once-through cooling systems with recirculating cooling systems to mitigate these effects.

Scientists argue for more comprehensive studies of Cascade volcanoes

The Cascades Arc is home to a string of volcanoes with radically different histories, sparking researchers to look beyond individual volcanoes. By analyzing heat flow, seismic wave speeds, and other data sources, scientists aim to understand why some volcanoes erupt differently than others.

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.

Researchers find broad impacts from lake trout invasion in Yellowstone

The introduction of lake trout in Yellowstone Lake has altered the numbers, diet, and behavior of organisms from microscopic zooplankton to large animals such as bears and bald eagles. The study found that the impact of lake trout on native cutthroat trout has cascaded across the ecosystem.

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.

Climatic factors and decline of Cahokia

Researchers analyzed sediment cores from Horseshoe Lake adjacent to Cahokia settlement, finding a correlation between climate shifts and population decline. Climate changes, including decreased summer precipitation and flooding, stressed Cahokia's agricultural system, contributing to its depopulation.

Giant animals lived in Amazonian mega-wetland

Researchers have discovered that Lake Pebas, a massive wetland in western Amazonia, existed until 8.5 million years ago, contrary to previous assumptions. The lake's presence was confirmed through geochronology of mineral zircon specimens from two paleontological sites, providing new insights into the region's geological history.

UBC researchers explore an often ignored source of greenhouse gas

Researchers at UBC's Okanagan campus have discovered that irrigation with lake water releases CO2 from bicarbonates, a natural process that has practical applications for agriculture-based communities. The study suggests that understanding this process is essential in combatting rising atmospheric greenhouse gases.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Surprising findings on forest fires

Fires increased during phases of lush steppe oak forest growth in relatively humid and warm climates. This contradicts the assumption that dry brushwood was decisive for early fires, suggesting fire risk is linked to plant biomass.

Tiny satellites reveal water dynamics in thousands of northern lakes

Researchers used small satellites to observe changes in 85,000 North American lakes over summer 2017, finding significant shoreline fluctuations that add up to hundreds of square kilometers. These findings could impact calculations of natural greenhouse gas emissions from these northern lakes.

Ice shelves buckle under weight of meltwater lakes

Researchers have directly observed an Antarctic ice shelf bending under the weight of ponding meltwater, a phenomenon that may have triggered the 2002 collapse of the Larsen B ice shelf. The study found that meltwater lakes can contain up to two million tons of water, pushing downward on the ice and creating stress.

Road salts could endanger ecosystems, water supplies

Excessive road salt application has led to increased chloride levels in streams and rivers, posing health risks and disrupting ecosystems. Implementing brine solutions and snow plows can reduce salt use by up to 70%.

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.

Surface lakes cause Antarctic ice shelves to 'flex'

Researchers found that filling and draining of meltwater lakes on Antarctic ice shelves causes them to flex, which can lead to instability. The study supports the idea that recent ice shelf breakup was triggered by large amounts of surface meltwater produced in response to atmospheric warming.

Many Arctic lakes give off less carbon than expected

Researchers found that many Arctic lakes are self-contained units with low carbon emissions, contradicting previous assumptions about the region's role in global carbon cycles. The study's findings suggest that these lakes may not be significant contributors to greenhouse gas emissions, at least for now.

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.

Study shows that Vikings enjoyed a warmer Greenland

A Northwestern University team found that southern Greenland's climate was relatively warm when the Norse lived there between 985 and 1450 C.E., about 1.5-degrees Celsius warmer than surrounding cooling centuries.

Dry inland waters are underrated players in climate change

Recent studies found that dry inland waters play a significant role in the global carbon cycle, emitting around 0.2 gigatonnes of CO2 annually. Freshwaters also act as carbon sinks when water levels are high, but emit gases when they dry out. The team suggests reservoirs as potential targets for reducing CO2 emissions from inland waters.

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.

Long term ag change impacts stream water quality

Researchers found that sediment levels declined over the study period, while phosphorus levels increased after an initial decline. Nitrogen levels also decreased, indicating potential benefits to local freshwater ecosystems and the Gulf of Mexico.

Fish bones yield new tool for tracking coal ash contamination

Researchers at Duke University have discovered that fish ear bones can serve as a fingerprint for identifying and tracking coal ash contamination in aquatic ecosystems. The study used strontium isotope ratios in otoliths to connect high levels of toxic elements back to the contamination source.

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

Dust threatens Utah's 'greatest snow on earth'

A University of Utah study found that a single dust storm in 2017 accelerated snowmelt in the Wasatch Mountains by 25 percent. Dust deposition was linked to declining water levels in the Great Salt Lake, which may lead to more frequent and severe snowmelt events.

Health checkups for alpine lakes

Researchers at the University of Alberta found alpine zooplankton to be excellent indicators of lake health, sensitive to climate changes. By analyzing over 1,200 lakes across North America, the team showed that these tiny organisms can assess ecosystem function based on their ecological traits.

New study will track how trade wars affect the Midwest

A new study led by Ohio State University aims to build models that predict how future trade scenarios could affect the Great Lakes region's food, energy, and water supply. The research team is gathering input from farmers, state and regional policy organizations, and other stakeholders to formulate potential future scenarios.

Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

Can rice filter water from ag fields?

Researchers have discovered that rice plants can be used to clean runoff from farms before it enters waterways, capturing pesticides and reducing their presence in rivers and streams. The study found that levels of three common pesticides dropped by as much as 97% in fields where rice was planted.