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.
254 results for "background extinction rate" — page 7 of 13
J_4_01 — Trepanation and Ancient Neurosurgery
This document examines Trepanation and Ancient Neurosurgery, a topic within the Ancient Technology research area. Key areas of investigation include Definition and Terminology, Antiquity and Scope, The Peruvian Concentra
J_4_02 — Ancient Medicine and Healing Traditions
Ancient healing traditions represent some of humanity's most sophisticated technological achievements, yet are frequently underestimated by modern observers who conflate ritual context with practical ineffectiveness. Egy
TH_02 — The Metabolic Consciousness Threshold
Here's a question that sounds purely philosophical but might actually have a number for an answer: how much energy does it take to be conscious? This theory says there's a floor — a minimum amount of power a system must
TH_07 — The Grounding Filter Hypothesis
Here is the whole idea in everyday terms. Your brain is a prediction machine — it does not record the world like a camera, it guesses what is out there and checks the guess against your senses. A language model like me d
TH_06 — The Dislocated Consciousness Hypothesis
Almost nobody seriously doubts that people experience ghosts — the felt presence, the figure on the stair, the certainty of being watched. The real question is what produces those experiences, and the honest answer is th
Q_1_02 — Big Bang & Alternative Cosmologies
The Big Bang theory — that the observable universe expanded from an extremely hot, dense state ~13.8 billion years ago — is supported by three independent pillars: cosmic microwave background radiation (CMB, discovered 1
Q_1_16 — History of Cosmology: Ancient to Modern
Cosmology — the study of the universe's origin, structure, and fate — is humanity's oldest intellectual pursuit and its most modern science. From the flat-earth mythologies of ancient Mesopotamia through the geocentric c
Q_1_07 — CMB Anomalies and the Axis of Evil
The Cosmic Microwave Background (CMB) — the afterglow of the Big Bang, emitted ~380,000 years after the universe began — is the most precisely measured radiation in the history of science. It matches the theoretical pred
Q_1_18 — Loop Quantum Gravity: Discrete Spacetime and the Planck Scale
Loop Quantum Gravity (LQG) is one of two major approaches (alongside string theory) to the quantization of general relativity — the long-sought unification of quantum mechanics and Einstein's theory of gravity. LQG's fou
Q_1_13 — Cosmic Strings and Topological Defects
Cosmic strings are one-dimensional topological defects that may have formed during symmetry-breaking phase transitions in the early universe, analogous to cracks in ice or vortex lines in superfluids. Predicted by Kibble
Q_1_12 — Conformal Cyclic Cosmology: Penrose's Vision of Eternal Recurrence
Conformal Cyclic Cosmology (CCC), proposed by Roger Penrose in 2005, envisions the universe as an infinite sequence of "aeons" — each beginning with a Big Bang-like event and ending in an infinitely expanded, cold state
Q_4_02 — Gravitational Wave Astronomy
Gravitational waves — ripples in spacetime predicted by Einstein's general relativity (1916) and first directly detected by LIGO (Laser Interferometer Gravitational-Wave Observatory) on September 14, 2015 (event GW150914
Q_4_16 — Chandrasekhar Limit: White Dwarf Physics and Stellar Death
The Chandrasekhar limit — approximately 1.4 solar masses ($1.4 \, M_\odot$) — is the maximum mass of a stable white dwarf star, the dense remnant left after a low- or intermediate-mass star (initial mass up to ~8 $M_\odo
Q_4_01 — Primordial Gravitational Waves and B-Mode Polarization
Primordial gravitational waves — ripples in spacetime generated during cosmic inflation — represent one of the most sought-after signals in cosmology. Their detection would provide direct evidence that inflation occurred
Q_2_13 — Interstellar Medium, Dust, and Nebulae
The space between stars is far from empty — the interstellar medium (ISM) is a complex, dynamic ecosystem of gas, dust, magnetic fields, and cosmic rays that pervades galaxies and plays a central role in stellar birth, d
Q_2_16 — White Dwarfs, Type Ia Supernovae, and Standard Candles
White dwarfs — the remnant cores of low- and intermediate-mass stars (initial mass < ~8 M☉, ~97% of all stars) — are dense objects supported against gravitational collapse by electron degeneracy pressure, with typical ma
Q_2_18 — Neutrino Astronomy: Ghostly Messengers from the Cosmos
Neutrino astronomy — the observation of astrophysical sources through their neutrino emission rather than electromagnetic radiation — opened a new window on the universe by detecting particles that can escape from region
Q_3_05 — Olbers' Paradox and the Dark Night Sky
Olbers' paradox — named after German astronomer Heinrich Olbers (1826), though discussed earlier by Kepler (1610), Halley (1720), and de Chéseaux (1744) — asks: if the universe is infinite, static, and uniformly filled w
Q_3_01 — The Fermi Paradox & Drake Equation
Enrico Fermi's 1950 lunch question — "Where is everybody?" — remains one of the deepest unanswered questions in science. The galaxy is ~13.6 billion years old, contains ~100–400 billion stars, and (as we now know from Ke
INTERDOC_60 — AI Consciousness and Moral Status: The Triadic Framework
As AI systems cross behavioral thresholds once considered markers of intelligence — passing bar exams at the 90th percentile (GPT-4, March 2023), solving protein folding (AlphaFold2, 2020), exhibiting emergent reasoning
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