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.
3,721 results for "N" — page 116 of 187
L_5_16 — Archaeogenetics: Ancient DNA and the Human Past
Archaeogenetics — the extraction and analysis of DNA from ancient human, animal, and plant remains — has transformed our understanding of human history since the field's breakthrough in 2010. Advances in next-generation
L_5_01 — Human Microbiome and Co-Evolution
The human microbiome — the aggregate community of microorganisms (bacteria, archaea, fungi, viruses, protists) living on and within the human body — comprises roughly 38 trillion microbial cells (Sender et al., 2016, Cel
L_5_06 — Genetic Adaptation to Disease: Malaria, Plague, TB
Infectious disease has been the most powerful selective force on the human genome throughout history. Pathogens — particularly malaria, plague, tuberculosis, smallpox, and cholera — have killed more humans than all other
L_5_08 — Ancient DNA from Sediments: Cave Dirt Genomics
One of the most revolutionary methodological advances in ancient DNA (aDNA) research has been the recovery of hominin DNA directly from cave sediments — without any bones or teeth. This technique, pioneered by Matthias M
L_5_09 — Human Microbiome Co-Evolution: Ancient Gut Companions
The human microbiome — the trillions of bacteria, archaea, fungi, and viruses that inhabit our bodies, particularly the gastrointestinal tract — is not merely a passive inhabitant but a co-evolved partner that has shaped
L_5_12 — Microbiome-Consciousness Connection: Gut-Brain Axis and Microbial Influence on Mind
The microbiome-gut-brain axis — the bidirectional communication network linking the ~38 trillion microorganisms inhabiting the human gastrointestinal tract with the central nervous system — has emerged as one of the most
L_5_04 — Ancient Microbiome and Paleomicrobiology
Paleomicrobiology — the study of ancient microorganisms through the application of molecular techniques (ancient DNA extraction, metagenomics, proteomics) to archaeological and paleontological material — has revolutioniz
L_5_02 — Genetic Diseases and Founder Effect Populations
When a small group founds a new population and subsequently expands in relative isolation, genetic drift can amplify alleles that were rare in the ancestral population — including deleterious recessive disease alleles. T
L_5_07 — Genetics of Speech and Language: Beyond FOXP2
Language is humanity's most distinctive cognitive ability — and identifying its genetic basis has been a central goal of human genetics and neuroscience since the discovery of the KE family and the FOXP2 gene. The KE fam
L_5_14 — Amino Acid Racemization Dating Method
Amino acid racemization (AAR) — a geochronological dating technique based on the chemical conversion of L-amino acids (the biologically predominant enantiomer in living organisms) to D-amino acids (the mirror-image confi
L_5_11 — Genetics of Altitude Adaptation: Tibet, Andes, Ethiopia
High-altitude adaptation represents one of the most dramatic and best-studied examples of natural selection in contemporary human populations. More than 140 million people worldwide live at elevations above 2,500 meters,
L_5_13 — The Microbiome-Brain Axis: Gut Bacteria, Mood & Consciousness
The microbiome-gut-brain axis — bidirectional communication between the trillions of gut microorganisms and the central nervous system — has emerged as one of the most significant frontiers in neuroscience and consciousn
Y_4_08 — Sleep Science — REM, NREM, and the Ancient Understanding of Sleep
Sleep science has undergone a revolution in the 21st century, fundamentally altering our understanding of why humans sleep. The landmark 2012 discovery of the glymphatic system by Maiken Nedergaard revealed that the brai
Y_4_06 — Synesthesia and Cross-Modal Perception
Synesthesia — the involuntary, consistent experience of one sensory modality triggering perception in another (e.g., hearing colors, tasting shapes) — affects roughly 4% of the general population when broad subtype defin
Y_4_02 — Savant Syndrome and Acquired Genius
Savant syndrome — extraordinary ability coexisting with significant cognitive disability — affects roughly 1 in 10 people with autism and ~1 in 2,000 people with other developmental disabilities or brain injuries. What m
Y_4_17 — Sleep Disorders & Parasomnias
Sleep disorders affect an estimated 50–70 million Americans and up to 45% of the global population, encompassing over 80 distinct conditions classified by the International Classification of Sleep Disorders (ICSD-3, 2014
Y_4_04 — Entoptic Phenomena and Phosphene Patterns
This document examines Entoptic Phenomena and Phosphene Patterns, a topic within the Consciousness research area. Key areas of investigation include Defining Entoptic Phenomena, Phosphenes: Light from Within, Heinrich Kl
Y_4_01 — Lucid Dreaming Research
Lucid dreaming — being consciously aware that you are dreaming WHILE dreaming, and potentially controlling dream content — was scientifically verified in 1975-1981 through a breakthrough protocol: pre-arranged EYE SIGNAL
Y_4_14 — Virtual Reality, Immersive Technology, and Altered Perception
Virtual reality (VR) and immersive technologies create genuine altered states of perception — not merely visual illusions but deep modifications of body ownership, spatial awareness, self-identity, and emotional processi
Y_4_15 — Sensory Overload and Information Flooding: Excess as Altered State
Sensory overload — the state that arises when sensory input exceeds the brain's capacity for orderly processing — represents the mirror image of sensory deprivation as a pathway to altered consciousness. While deprivatio
BROWSE BY SECTION — 3,721 documents across 34 fields