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.
3,692 results for "g factor" — page 155 of 185
R_1_13 — Archaea: The Third Domain and Extremophilic Diversity
Archaea constitute the third domain of life — neither Bacteria nor Eukarya — recognized as a distinct lineage by Carl Woese and George Fox in 1977 through revolutionary 16S ribosomal RNA phylogenetic analysis. For decade
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_02 — The Cambrian Explosion
Between ~541 and ~520 million years ago, nearly ALL major animal body plans (phyla) appeared in the fossil record in an evolutionary "instant" — roughly 20 million years. Before this, life had been single-celled for ~3 b
R_1_18 — Mass Extinction Periodicity
The question of whether mass extinctions follow a periodic pattern — recurring at regular intervals driven by astronomical or geological cycles — has been one of the most provocative and contentious hypotheses in paleont
R_1_15 — The Chirality Problem: Why Life Uses Left-Handed Amino Acids
One of the deepest unsolved problems in the origin of life is homochirality — the fact that all known life on Earth uses almost exclusively L-amino acids (left-handed) for proteins and D-sugars (right-handed) for nucleic
R_1_12 — History of Evolutionary Theory
Evolutionary theory — the unifying framework of modern biology — has itself undergone a remarkable evolution over more than two centuries. Pre-Darwinian ideas included Lamarck's transformism (1809), which proposed that o
S_4_18 — Space Habitats & In-Situ Resource Utilization (ISRU)
Space habitation beyond low Earth orbit requires solving two fundamental challenges: creating livable enclosed environments and manufacturing essential materials from local resources rather than launching everything from
S_4_05 — Asteroid Deflection and Planetary Defense
Asteroid and comet impacts represent the only existential risk with a proven extinction track record — the Chicxulub impact 66 million years ago ended the Cretaceous and eliminated ~75% of species including non-avian din
S_4_03 — Nuclear War and Civilizational Risk
Nuclear war remains one of the most acute existential threats to human civilization, with approximately 12,500 warheads in global arsenals as of 2024 and the Doomsday Clock at a historic 90 seconds to midnight. Peer-revi
S_4_21 — Alcubierre Warp Drive
The Alcubierre warp drive is a theoretical solution to Einstein's field equations of general relativity that describes a space-time geometry in which a region of flat space — a "warp bubble" — moves through space at arbi
S_4_01 — Existential Risk Taxonomy
Existential risk (x-risk) refers to any event that could permanently curtail humanity's long-term potential — including extinction, civilizational collapse without recovery, or irreversible loss of value (e.g., permanent
S_4_12 — Space Debris: Kessler Syndrome, Orbital Pollution, and Cleanup Tech
Space debris — defunct satellites, spent rocket stages, fragmentation debris, paint flakes, and other artificial objects orbiting Earth — poses a growing threat to space operations, astronaut safety, and the long-term su
S_4_07 — Autonomous Weapons Systems — AI, Lethal Autonomy, and the Future of Warfare
Autonomous weapons systems (AWS) represent one of the most consequential intersections of artificial intelligence and military technology. The trajectory from early automated defensive systems (Phalanx CIWS, 1980) throug
S_1_03 — Brain-Computer Interfaces and Consciousness Upload
Brain-computer interfaces (BCIs) translate neural activity into digital signals, enabling direct communication between the brain and external devices. The field spans from mature medical devices (cochlear implants: 1 mil
S_1_13 — Human-AI Collaboration and Coevolution
Human-AI collaboration refers to the partnership between human cognitive strengths (intuition, creativity, ethical judgment, contextual understanding, emotional intelligence) and AI capabilities (speed, pattern recogniti
S_1_08 — Blockchain and Decentralized Systems
Blockchain is a distributed, append-only data structure in which transactions are grouped into blocks, cryptographically linked in sequence, and validated by a decentralized network of nodes using a consensus mechanism —
S_5_15 — Social Robotics: Companion Robots, Elderly Care, and Human-Robot Interaction
Social robotics — the design, construction, and study of robots intended to interact with humans in socially meaningful ways — occupies the intersection of robotics, artificial intelligence, psychology, and design. Unlik
S_2_03 — Bioethics of Human Enhancement
Should humans enhance themselves beyond the boundaries of nature? This is the central question of enhancement bioethics — a field at the intersection of philosophy, medicine, law, genetics, neuroscience, and disability s
F_1_28 — Ancient African Diaspora & Maritime Evidence
The ancient African diaspora — the dispersal of African peoples, cultures, technologies, crops, and genetic lineages beyond the African continent in antiquity — is a topic that encompasses some of the most significant po
F_1_01 — Trans-Oceanic Contact
Mainstream history asserts that the Americas were isolated from the Old World from ~11,000 BCE until Columbus (1492 CE), with the exception of brief Norse contact (~1000 CE). However, chemical evidence (cocaine and nicot
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