RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
2,646 results for "SI second" — page 6 of 133
ZH_2_07 — Persian and Central Asian Astronomical Heritage
The astronomical traditions of Persia (Iran) and Central Asia (modern Uzbekistan, Tajikistan, Afghanistan, Turkmenistan) produced some of the most important astronomers, observatories, and star catalogs in pre-modern his
ZH_1_06 — Zodiac Origins: Babylonian MUL.APIN to Greek Transmission
The zodiac — the division of the ecliptic (the apparent annual path of the Sun against the background stars) into 12 equal 30° segments, each named after a constellation — is a Babylonian invention that became the founda
ZH_1_17 — Precession Discovery Timeline
Axial precession — the 25,772-year wobble of Earth's rotational axis tracing a circle among the stars — causes the vernal equinox point to shift approximately 1° every 71.6 years against the zodiacal background. Hipparch
C_1_16 — Structuralism and Myth: Lévi-Strauss, Binary Opposition, and Mythemes
Claude Lévi-Strauss (1908–2009) revolutionized the study of mythology by applying structural linguistics — particularly Ferdinand de Saussure's and Roman Jakobson's models — to the analysis of myth. His central insight w
C_5_25 — Underworld Journey / Katabasis: Descent to the Land of the Dead
The katabasis (Greek: κατάβασις, "going down") — the hero's or god's descent to the underworld and return — is one of the oldest and most universal narrative structures in world mythology. The Descent of Inanna (Sumerian
C_5_33 — Oceanic Mythology: Pacific Creation Stories and Polynesian Cosmology
The mythologies of the Pacific — spanning Polynesia, Melanesia, and Micronesia across the world's largest ocean — represent some of humanity's most elaborate oral traditions, encoding navigational knowledge, ecological u
C_5_31 — Resurrection and the Dying-Rising God: Death and Rebirth Across Traditions
The dying-and-rising god — a deity who dies (often violently), descends to the underworld, and returns to life — is one of the most debated categories in comparative religion. James George Frazer (The Golden Bough, 1890/
C_3_14 — Central Asian Shamanic Traditions
Central Asian shamanism represents one of the oldest continuously practiced spiritual systems on Earth, with roots extending to at least the Neolithic period across the vast steppe, taiga, and mountain regions from the U
ZF_2_13 — Marine Invertebrate Diversity — Cnidarians, Echinoderms, Mollusks
Marine invertebrates — animals without backbones — constitute the vast majority of animal diversity in the ocean: of ~230,000 described marine animal species, approximately 195,000 (85%) are invertebrates, spanning more
ZF_3_10 — Marine Paleontology and the Fossil Record of the Seas
Marine paleontology documents the evolution of life in Earth's oceans over ~3.8 billion years — from the earliest microbial fossils (stromatolites, ~3.5 Ga) to the complex marine ecosystems of the modern ocean. The marin
ZF_4_06 — Ocean Remote Sensing and Satellite Oceanography
Satellite oceanography — the use of Earth-orbiting sensors to observe ocean properties from space — has transformed ocean science since the 1970s from a data-sparse field reliant on sparse ship transects to a globally co
ZF_1_15 — Wave Physics: Wind Waves, Swell, and Coastal Dynamics
Ocean surface waves are the most visible expression of ocean-atmosphere energy transfer — created by wind blowing across the water surface, they travel across entire ocean basins and dissipate their energy on distant coa
Z_5_12 — Splicing: RNA Processing and Alternative Splicing
RNA splicing — the process by which intervening sequences (introns) are removed from precursor messenger RNA (pre-mRNA) and the remaining sequences (exons) are joined together to form the mature mRNA — is a fundamental s
Z_5_11 — Microbiome-Host Coevolution: Holobiont Theory, Gut Ecology, and Metabolic Symbiosis
Microbiome-host coevolution refers to the deep, reciprocal evolutionary relationship between multicellular organisms and the complex microbial communities (bacteria, archaea, fungi, viruses) that inhabit their bodies — p
Z_2_18 — Pharmacogenomics and Precision Medicine
Pharmacogenomics — the study of how genetic variation affects individual responses to drugs — aims to replace the "one-size-fits-all" prescribing model with genotype-guided therapy, selecting the right drug at the right
Z_2_16 — Cancer Genomics & Precision Oncology
Cancer genomics — the comprehensive analysis of the genetic alterations that drive cancer initiation, progression, and resistance to therapy — has transformed oncology from a tissue-of-origin classification system into a
Z_4_20 — Quorum Sensing in Bacteria
Quorum sensing (QS) is a chemical communication system used by bacteria to coordinate gene expression in response to population density — enabling single-celled organisms to exhibit collective behaviors that would be ine
Z_4_01 — Human Microbiome, Gut-Brain Axis, and the Holobiont Concept
The human microbiome — the ~38 trillion microbial cells (bacteria, archaea, fungi, viruses) inhabiting the human body — constitutes a co-evolved ecosystem that profoundly influences health, immunity, metabolism, developm
Z_4_15 — Molecular Motors: Kinesin, Dynein, and Myosin
Molecular motors — protein machines that convert the chemical energy of ATP hydrolysis into directed mechanical work — are the engines of cellular life, responsible for transporting cargo within cells, driving cell divis
Z_4_19 — Exosome Signaling and Intercellular Communication
Exosomes are small (30–150 nm) membrane-bound extracellular vesicles (EVs) released by virtually all cell types, carrying a cargo of proteins, lipids, mRNAs, microRNAs (miRNAs), and other nucleic acids that can be taken
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