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.
738 results for "saber-toothed cat" — page 8 of 37
INTERDOC_19 — Cosmic Impact, Mythology, and Cultural Memory
[KEY FINDING] The Younger Dryas Impact Hypothesis (YDIH) — first proposed by Richard Firestone, Allen West, and Simon Warwick-Smith (2006–2007) — argues that a cosmic impact or airburst event ~12,800 BP triggered the You
ZB_1_16 — Acoustic Ecology and Bioacoustics
Bioacoustics — the study of sound production, transmission, and reception in animals — and acoustic ecology (the study of organisms' relationships with their sonic environment) have revealed that the natural world is sat
ZC_3_19 — Digital Divide and Information Inequality
The digital divide — the gap between populations with effective access to digital and information technologies and those without — has evolved from a simple binary (connected vs. unconnected) into a multi-dimensional fra
G_1_01 — Experimental Archaeology: Testing Ancient Technologies
Experimental archaeology is a sub-discipline that tests hypotheses about past technologies, construction methods, and subsistence strategies through physical replication and controlled experimentation. From Thor Heyerdah
O_3_12 — Cenote and Sinkhole Ecology — Surface-Groundwater Connections
Cenotes (from the Maya ts'onot) and sinkholes — natural depressions or holes formed by the dissolution of soluble bedrock (limestone, dolostone, gypsum) in karst landscapes — are far more than geological curiosities. The
T_3_15 — Decision Fatigue & Ego Depletion
Decision fatigue describes the deterioration of decision quality after a long session of decision-making, while ego depletion refers to the broader theory that self-control and willpower draw upon a limited mental resour
D_4_09 — Cenotes: Maya Sacred Wells, Karst Hydrology, and Underworld Cosmology
Cenotes (from Yucatec Maya dz'onot or ts'onot) are natural sinkholes formed by the dissolution and collapse of limestone bedrock in the Yucatan Peninsula, exposing the vast underground freshwater aquifer beneath. Over 6,
B_5_04 — Euhemerism and Historical Figures Behind Mythological Beings
Euhemerism is the interpretive method named after Greek mythographer Euhemerus of Messene (~300 BCE), who argued in his Sacred History (Hiera Anagraphe) that the gods of Greek religion were originally human kings and war
ZD_5_15 — Information & Hybrid Warfare
Information warfare and hybrid warfare describe the integration of military and non-military tools — cyberattacks, disinformation campaigns, economic coercion, proxy forces, diplomatic pressure, and conventional military
L_1_07 — Genetic Bottlenecks, Founder Effects, and Toba
Genetic bottlenecks — dramatic reductions in population size that slash genetic diversity — and founder effects — the reduced variation carried by small colonizing groups — have profoundly shaped the genomes of species f
L_2_10 — Human–Dog Co-Evolution: 40,000 Years Together
The domestication of the dog (Canis lupus familiaris) from gray wolves (Canis lupus) represents the oldest known domestication event and one of the most consequential interspecies relationships in human history — predati
Y_5_08 — Sweat Lodge and Heat-Induced Altered States
The sweat lodge — and heat-induced altered states more broadly — represents one of the most ancient and geographically widespread methods of intentionally altering consciousness through controlled hyperthermia: sustained
H_2_08 — Textbook Bias and National History Narratives
History textbooks are among the most powerful instruments of national identity formation — and among the most systematically distorted sources of historical knowledge in any society. Every nation's textbooks tell a selec
H_4_11 — Classified Science and Declassified Programs
Governments routinely classify scientific and technical research on national security grounds, creating vast bodies of knowledge that are inaccessible to the public, the scientific community, and democratic oversight for
P_1_07 — Deep Time and Cognitive Limits
This document examines Deep Time and Cognitive Limits, a topic within the Philosophy Meaning research area. Key areas of investigation include Origins of the Concept, The Scale Problem, The "Human Line" Problem. The anal
R_5_11 — Coral Biology: Symbiosis, Bleaching, and Reef Building
Coral reefs — often called the "rainforests of the sea" — are among Earth's most biodiverse and productive ecosystems, occupying less than 0.1% of the ocean floor yet supporting approximately 25% of all marine species. T
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
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_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
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