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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

Can biofuels be sustainable?

Researchers found that a portion of corn stover can be harvested for biofuel production without reducing soil organic carbon levels in high-yielding systems. This study suggests that corn stover could supply up to 25% of the biofuel crop needed by 2030.

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Studying rivers for clues to global carbon cycle

A Northwestern University professor is studying rivers to understand how organic carbon is processed and consumed by microorganisms, revealing that it's a bigger component of global carbon cycling than thought. The study provides a framework for assessing these processes and sheds light on the internal cycling of carbon in rivers.

Building blocks of life formed on Mars

A Carnegie Institution-led team finds organic compounds containing carbon and hydrogen in Martian meteorite Allan Hills 84001, suggesting that building blocks of life formed on Mars early in its history. The discovery was made by analyzing the rock's association with iron oxide mineral magnetite.

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.

Study reveals that nitrogen fertilizers deplete soil organic carbon

Research by University of Illinois soil scientists found that nitrogen fertilizers lead to a decline in soil organic carbon, even after decades of use. The study's findings have troubling implications for corn production and highlight the need for site-specific soil testing to optimize fertilizer rates.

The inside dope

Scientists at the Weizmann Institute of Science have successfully implemented doping in molecular electronics, enabling the control of electronic properties in organic molecules. This breakthrough could lead to the creation of environmentally friendly and versatile electronic components.

Before selling carbon credits, read this

Researchers found that a soil model can accurately estimate carbon levels in soil, enabling farmers to verify soil carbon change and sell carbon credits. The Century model's accuracy depends on accurate soil texture data, highlighting the need for benchmark monitoring sites.

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Where climate is made in a greenhouse world

Researchers identify a previously unrecognized link between mid-latitude climate dynamics and tropical African climate, leading to exceptionally high organic carbon burial. The study suggests that changes in atmospheric pressure systems and surface winds drive variations in precipitation and runoff patterns.

Relic of life in that Martian meteorite? A fresh look

Scientists have found that macromolecular carbon in Martian meteorites is always associated with magnetite, a mineral catalyst for its formation. This association raises hopes that the meteorite's carbon complexes could be evidence of non-biological synthesis of organic molecules on Mars.

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

Breakthrough in climate research

A team of researchers has solved a puzzle in climate research by explaining why micro-organisms break down carbon in soils at varying rates. The new theory predicts that an increase in climate temperatures will lead to more rapid carbon dioxide release and accelerated climate change.

AGU Journal highlights - 10 August 2004

Researchers analyze daily temperature ranges to explain global warming trends. A new seismic model reveals the cause of New Zealand's volcanism by tracking magma movement. Small robotic aircraft can now patrol the ocean, providing high-resolution oceanographic observations.

One type of carbon so resilient it skews carbon cycle calculations

Researchers found that graphitic black carbon resists conversion to other forms, such as combining with oxygen to form carbon dioxide. This resistance affects carbon cycle calculations, leading to significant overestimates of burial of combustion-derived black carbon in marine sediments.

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Are fish made of maple leaves?

A new study reveals that a significant part of the aquatic food chain is supported by terrestrial organic matter originating on the shoreline. Aquatic plants produce organic carbon through photosynthesis, which supports fish and invertebrate populations.

If we are what we eat, some lake fish are made of maple leaves

A study by Pace and colleagues found that 40-55% of lake plant production supports resident aquatic life, while 2250% of zooplankton is derived from terrestrial sources. The results suggest that aquatic food chains are supported not only by in-water production but also by organic matter from surrounding watersheds.

American Thoracic Society journal news tips for October 2003 (first issue)

Researchers found that children with mild asthma already show pathologic features of adult disease, including basement membrane thickening and airway eosinophilia. New AAT deficiency guidelines also aim to improve diagnosis and management by identifying specific risk factors for this hereditary disorder.

Designing a better catalyst for 'artificial photosynthesis'

Researchers at Brookhaven National Laboratory have discovered an important intermediate step in the artificial photosynthesis process using robust transition metal complexes like rhenium. By studying these reactions over short and long timescales, they found that two energetic metal complexes are involved in activating one CO2 molecule.

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.

Researchers develop methods to characterize diamonds

Scientists have developed new methods to characterize diamonds, allowing them to link the stones' properties to their mine of origin. This study aims to shed light on plate tectonics, the Earth's formation, and processes deep in the Earth.

Too much sun can harm ocean life

Researchers found that excessive ultraviolet radiation can harm plankton, which removes organic carbon from the ocean and contributes to the greenhouse effect. The study's findings have important implications for understanding the impact of climate change on marine ecosystems.

Apple iPhone 17 Pro

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

Adsorption on clay accounts for organic-rich rocks

The study found a clear relationship between organic carbon and smectite clay minerals, suggesting that dissolved organic molecules are drawn into the crystal lattice where they are protected from oxidation. This process, known as adsorption, plays a crucial role in maintaining habitable conditions in the biosphere.

Well preserved meteorite yields clues to carbon evolution in space

A team of researchers analyzed a rare, well-preserved meteorite found in Canada, revealing organic compounds with similarities to other known carbonaceous chondrites. The study suggests that the Tagish Lake Meteorite may represent an early stage in the evolution of complex carbon compounds in space.