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 protein" — page 95 of 185
R_2_12 — Tool Use in Animals: Corvids, Primates, Dolphins, and Cognitive Evolution
Tool use — the employment of an external object to alter the form, position, or condition of another object or organism — was once considered uniquely human, a defining cognitive threshold separating Homo sapiens from al
R_2_02 — Convergent Evolution and the Aquatic Ape Hypothesis
Convergent evolution — the independent development of similar features in unrelated lineages — is one of biology's most profound patterns. Eyes evolved independently at least 40-65 times (Fernald 2006). Echolocation evol
R_2_01 — Human Brain Evolution and the Cognitive Revolution
The human brain tripled in size over 3 million years — from ~400 cm³ (Australopithecus) to ~1,400 cm³ (modern Homo sapiens). This is the most dramatic encephalization in the history of life, and NO consensus exists on wh
R_2_03 — Neanderthal Cognition and Interbreeding
For over a century, Neanderthals were depicted as brutish, cognitively inferior "cave men" — a failed evolutionary experiment replaced by superior modern humans. This narrative has been DEMOLISHED by 21st-century genetic
R_2_10 — Primate Evolution and the Hominid Lineage
The order Primates, originating ~65–80 million years ago, encompasses prosimians (lemurs, tarsiers), monkeys, and apes. The human lineage (Hominini) diverged from the chimpanzee lineage ~6–7 Mya, based on molecular clock
R_2_11 — Convergent Evolution: Parallel Solutions Across Lineages
Convergent evolution — the independent origin of similar features in unrelated lineages — is one of the most striking patterns in the history of life, suggesting that natural selection repeatedly discovers the same "solu
R_2_08 — Bipedalism — Why We Walk Upright and What It Cost Us
Bipedalism — habitual upright walking on two legs — is the defining characteristic of the hominin lineage, predating brain enlargement, tool use, and language by millions of years. The earliest evidence comes from Sahela
R_1_10 — RNA World Hypothesis: The Origin of Life and Self-Replicating RNA
The RNA World hypothesis proposes that early life was based on RNA molecules that served as both genetic material and catalysts — before the emergence of DNA and proteins. This idea, named by Walter Gilbert in 1986, rest
R_1_01 — Abiogenesis & Origin of Life Theories
Abiogenesis — the emergence of life from non-living chemistry — remains one of the deepest unsolved problems in science. The oldest confirmed microfossils date to ~3.5 billion years ago (Pilbara, Western Australia), with
R_1_07 — Viruses as Evolutionary Drivers — Endogenous Retroviruses and Genomic Integration
Viruses are not merely disease agents — they are fundamental architects of evolution. The human genome contains approximately ~8% endogenous retroviral (ERV) sequences (~100,000 ERV fragments), meaning roughly eight time
R_1_05 — Quantum Biology
Until recently, quantum effects were thought impossible in warm, wet biological systems. The standard assumption held that thermal noise at physiological temperatures (~310 K) would destroy quantum coherence within femto
R_1_06 — Symbiogenesis — Lynn Margulis and Cooperative Evolution
Symbiogenesis — the evolutionary origin of new organisms, organelles, or metabolic capabilities through the permanent merger of previously independent life forms — is one of the most consequential biological discoveries
R_1_19 — Deep-Sea Hydrothermal Vent Origin of Life
The deep-sea hydrothermal vent hypothesis for the origin of life proposes that life on Earth began at submarine hydrothermal systems — either high-temperature black smoker vents (>350°C, acidic, rich in transition metals
R_1_14 — Biofilms: Microbial Communities, Quorum Sensing, and Cooperation
Biofilms are structured communities of microorganisms — bacteria, archaea, fungi, and algae — attached to surfaces and embedded in a self-produced matrix of extracellular polymeric substances (EPS): polysaccharides, prot
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
R_1_16 — Endosymbiotic Theory: Modern Developments in Organelle Evolution
Endosymbiotic theory — the proposition that mitochondria and chloroplasts originated as free-living bacteria that were engulfed by ancestral eukaryotic cells and subsequently became obligate intracellular symbionts — is
R_1_09 — The Great Oxidation Event: Oxygen, Cyanobacteria, and Earth's Atmospheric Transformation
The Great Oxidation Event (GOE), occurring approximately 2.4–2.1 billion years ago during the Paleoproterozoic, was the most dramatic chemical transformation in Earth's history — atmospheric oxygen rose from trace levels
S_4_10 — Space Elevators and Advanced Launch Technology
Space access remains the fundamental bottleneck for space development — current chemical rockets achieve orbit at $1,500–$5,000/kg to low Earth orbit (SpaceX Falcon 9, ~$2,700/kg; Starship aims for <$100/kg but is unprov
S_4_02 — Space Exploration, Astrobiology, and Humanity's Cosmic Future
Humanity stands at the threshold of becoming a multi-planetary species — and possibly discovering extraterrestrial life within the next few decades. Mars remains the primary near-term target, with NASA's Artemis program,
S_4_14 — Satellite Mega-Constellations: Starlink, Space Pollution, and Connectivity
Satellite mega-constellations — networks of hundreds to tens of thousands of small satellites in low Earth orbit (LEO) providing global broadband internet coverage — have moved from concept to reality, with SpaceX's Star
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