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.
355 results for "Ext" — page 3 of 18
E_3_05 — Megafauna Extinction — Overkill, Climate, or Cosmic Impact?
The late Quaternary megafauna extinction represents one of the most dramatic biodiversity losses in the last 66 million years, eliminating approximately 178 species of large-bodied mammals (≥44 kg) across six continents
E_2_04 — Permian-Triassic Great Dying — The Biggest Mass Extinction
Approximately 252 million years ago, at the boundary between the Permian and Triassic periods, Earth experienced the worst mass extinction in its entire history — an event so devastating it has been called "The Great Dyi
E_4_24 — Quaternary Science: Integrating Ice Ages, Extinctions, and Migrations
Quaternary science is the interdisciplinary study of Earth's most recent geological period — the Quaternary (2.58 Ma to present), encompassing the Pleistocene (2.58 Ma to 11,700 BP) and the Holocene (11,700 BP to present
ZG_2_07 — Dead Languages: Extinction, Documentation, and Revival
A dead language is one that no longer has any native speakers — no community transmits it to children as a first language through normal intergenerational communication. Of the approximately 7,000 languages spoken today,
J_2_02 — Ancient Textiles — Weaving, Dyeing, and Fiber Technology
Ancient textile production represents one of humanity's oldest and most sophisticated technologies, with dyed flax fibers from Dzudzuana Cave (Georgia) dated to approximately 34,000 BP pushing the origins of fiber techno
ZB_5_05 — Extinction Biology and De-Extinction
Extinction — the complete disappearance of a species — is a permanent event that has shaped life's history as profoundly as origination. Background extinction (the normal, continuous loss of species) proceeds at ~0.1–1 s
ZB_5_06 — Mass Extinction Ecology: Catastrophe, Recovery, and Evolutionary Reset
Mass extinctions — episodes in which >75% of species disappear within a geologically brief interval — have profoundly shaped the history of life on Earth, acting as ecological and evolutionary resets that eliminate domin
Y_5_06 — Extreme Environments, Isolation, and Consciousness
Extreme environments and prolonged isolation produce distinctive altered states of consciousness — hallucinations, dissociation, time distortion, the sensation of an unseen companion, and profound shifts in self-identity
Y_5_04 — Anomalous Human Abilities — Yogic Siddhis, Firewalking, and Extreme Performance
Human cultures have long documented individuals who demonstrate extraordinary physical and mental abilities that challenge conventional understanding of human limits. This document surveys the full spectrum, from well-do
H_2_05 — History Rewriting and Textbook Controversies
The rewriting of history through state-controlled textbooks and curricula is one of the most persistent and globally consequential forms of knowledge suppression. This document examines four major case studies: the "Lost
H_3_12 — Museum Decontextualization: How Display Distorts Meaning
When an archaeological artifact is removed from its findspot — the soil layer, building, grave, or landscape in which it was deposited — and placed in a museum vitrine, it undergoes a fundamental transformation of meanin
H_3_06 — Linguistic Extinction and Lost Knowledge Systems
Of the approximately 7,000 languages spoken today, linguists estimate
H_3_14 — Oral History Suppression: Favoring Text Over Voice
Academic historiography has systematically privileged written texts over oral sources — treating written documents as reliable evidence and oral traditions as unreliable, distorted, or "merely" mythological. This literac
ZE_3_22 — Longevity Ethics & Life Extension: Moral Dimensions of Radical Lifespan Enhancement
The prospect of radical life extension — extending human lifespan from the current ~80-year average in developed countries to 150, 500, or even indefinite years through senolytics, gene therapy, organ replacement, AI-dri
R_5_02 — Megafauna Extinction: Quaternary Losses and the Overkill Debate
Between ~50,000 and 10,000 years ago, Earth lost the majority of its large-bodied animals (megafauna >44 kg) — woolly mammoths, ground sloths, saber-toothed cats, giant wombats, moa, and dozens of other spectacular speci
R_1_11 — Extinction, Recovery, and Adaptive Radiation
The history of life is punctuated by mass extinction events — catastrophic biodiversity losses that eliminate >75% of species in geologically brief intervals — followed by recovery phases and adaptive radiations during w
R_1_03 — Mass Extinction Events
Life on Earth has endured at least five catastrophic mass extinctions in 540 million years, each eliminating 60–96% of all species. The "Big Five" are: End-Ordovician (~443 Mya, ~85% species lost), Late Devonian (~372 My
R_1_04 — Extremophile Biology and the Limits of Life
Life exists in conditions once considered impossible: boiling hot springs (121°C+), deep-sea hydrothermal vents at crushing pressures, Antarctic ice, pH 0 acid lakes, nuclear reactor cooling pools, kilometers below Earth
S_3_01 — Climate Change, Civilization, and Deep-Time Context
Earth's climate has always changed — but the current rate and mechanism are unprecedented in geological history. This document places the modern climate crisis within the deep-time context that the corpus demands: from t
S_2_05 — Longevity Research — The Science of Aging, Life Extension, and the Quest for Biological Immortality
Aging — the progressive decline in physiological function leading to increased vulnerability, disease, and death — has transitioned from an accepted inevitability to a legitimate target of biomedical intervention. The fi
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