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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

The healing power of hydrogen peroxide

Researchers found that hydrogen peroxide released by damaged skin cells coordinates regeneration of sensory fibers, promoting wound healing and restoring touch sensation. The study demonstrates the healing power of hydrogen peroxide in zebrafish larvae.

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

Targeted molecules play only minor role in axon repair

Researchers at the University of California, San Diego School of Medicine found that removing three key inhibitory molecules from myelin did not significantly improve axon regeneration in damaged spinal cords. The study suggests that successful regeneration will require a combination of many approaches and techniques.

Coaxing injured nerve fibers to regenerate by disabling 'brakes' in the system

A study published in Neuron found that deleting a gene called SOCS3 allows mouse axons to regenerate vigorously after injury. The research suggests that the mTOR pathway and JAK/STAT signaling pathway can be manipulated to promote axon regeneration, potentially leading to improved recovery from brain or spinal cord injuries.

Regeneration can be achieved after chronic spinal cord injury

Scientists at the University of California, San Diego School of Medicine report that regeneration of central nervous system axons can be achieved in rats even when treatment is delayed by more than a year after the original spinal cord injury. The team used a combination of treatments to coax chronically injured axons to regenerate and...

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.

Master regulator found for regenerating nerve fibers in live animals

A study published in Nature Neuroscience reveals that Mst3b, an enzyme previously identified in the lab, is essential for regenerating damaged axons in both peripheral and central nervous systems. The findings suggest that activating Mst3b could lead to a possible treatment for brain and spinal cord injuries.

Finding the right connection after spinal cord injury

Researchers successfully guided regenerating sensory axons to their correct targets and formed synapses, but not electrically active connections due to lack of myelin sheath. The study suggests that restoring the myelin sheath is crucial for fully restoring function in injured spinal cords.

Researchers regenerate axons necessary for voluntary movement

Scientists at UC San Diego School of Medicine have clearly shown regeneration of critical nerve fibers required for voluntary movement. The breakthrough uses genetically engineered neurons to over-express receptors for BDNF, enabling corticospinal axon regeneration.

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Factor isolated that regenerates nerve fibers

Researchers at Boston Children's Hospital have isolated a previously unknown molecule called oncomodulin that stimulates axon regeneration in the optic nerve. The discovery offers new possibilities for treating conditions such as glaucoma, stroke, and spinal cord injury.

Understanding nerve degeneration in spastic paraplegia

Researchers have found that nerve degeneration in spastic paraplegia is associated with abnormal mitochondria and impairment of axonal transport, highlighting a potential target for therapeutic interventions. The study suggests that preserving mitochondrial function may help prevent axonal loss in this devastating condition.

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Undergrad probes regeneration of nerve cell branches

Researchers previously thought mature nerve cells couldn't regenerate after damage. However, a new study reveals that altering naturally occurring compounds can restore regenerative ability in mature cells. The study's findings offer hope for developing new treatments for optic and spinal cord disorders.