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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 protocol tracks how land use influences the way streams work

A new protocol uses path analysis to track the impact of land use on streams, identifying key entities and processes that influence aquatic health. By analyzing 10 watersheds, researchers have developed a valuable approach to understanding the 'land-cover cascade' and its effects on stream ecosystems.

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Study shows eutrophic lakes may not recover for a millennium

A new study models phosphorus loading into Lake Mendota, finding that the buildup of phosphorus in soils is likely to be the source of serious chronic environmental problems for hundreds of years. The research suggests that restoring water quality is unlikely unless soil erosion is greatly reduced and new technologies are developed.

Acid rain study reaches milestone, confirms soil nutrient depletion

A research team led by University of Maine scientists has documented that treating a watershed with additional acids accelerates the loss of critical nutrients calcium and magnesium. The experimentally induced nutrient depletion highlights the impact of acid rain on Maine's forests.

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Articles on life in tropical island streams published in BioScience

The BioScience special section examines the ecology and sustainability of tropical island streams, which face numerous threats including human alteration and natural fluctuations. The articles highlight conservation strategies to mitigate the effects of dams, deforestation, and invasive species on these ecosystems.

Survey of Chesapeake Bay watershed residents may save the bay

A telephone survey of 1,988 Chesapeake Bay watershed residents found concern about pollution and importance of restoration, yet a lack of individual stewardship activity. To encourage action, agencies must inform citizens about their role in pollution and how their actions can improve water quality.

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Finding a market for 'ecosystem services'

A group of scientists, lawyers, conservationists, economists, and policymakers came together at Stanford to discuss novel ways to market ecosystem services. The workshop aimed to protect the ecosystem by putting an economic value on its less tangible services, such as water purification and flood control.

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Watershed responses to forest practices studied

A new watershed model, GISWA, can help predict the effects of forest practices on watersheds and wildlife habitat. The model simulates hydrologic conditions at thousands of locations within a single watershed to provide a detailed representation of water movement.

Rural Residents' Cooperative Response To Water Crisis Now A Model

Residents of the Otter Lake watershed formed a cooperative effort to reduce atrazine levels in their water supply, leading to a successful plan that reduced costs and improved environmental outcomes. The study highlights the importance of community culture and solidarity in responding to environmental crises.

1970s Shale Hills Watershed Study Finds New Life

A 20-acre Pennsylvania watershed was extensively measured in the 1970s, providing valuable data for calibration of runoff models. The study revealed differences in water behavior between south- and north-facing slopes, with implications for understanding small-scale hydrology.

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"Doctor Watershed" Named AAAS Fellow

Dr. Ray Herrmann, a USGS scientist, has been named an AAAS Fellow for his distinguished efforts in advancing science through his watershed research. He is being recognized for his leadership in communicating the importance of watershed investigations to various stakeholders.