RESEARCH BASE

Search 3,721 documents across 34 fields — every claim tier-rated by evidence

3,721 Documents 34 Sections 43,625 Citations 34,852 Keywords Indexed 4 Evidence Tiers

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.

1,373 results for "Iron Pillar of Delhi" — page 65 of 69

ZH_1_09 Verified Archaeoastronomy

ZH_1_09 — Astronomical Clocks and Mechanical Timekeeping

The intersection of astronomy and timekeeping produced some of humanity's most remarkable technological achievements: astronomical clocks — mechanisms that display not only the time of day but also the positions of the s

astronomical clock Prague Strasbourg orrery water clock clepsydra
ZH_1_14 Credible Archaeoastronomy

ZH_1_14 — Roman Astronomy: Pliny, Manilius, and Imperial Star Observation

Roman civilization, despite its monumental achievements in engineering, law, and governance, made relatively few original contributions to astronomical theory — instead, Rome inherited, compiled, applied, and transmitted

Roman astronomy Pliny the Elder Manilius Astronomica Natural History Julian calendar
ZH_1_12 Verified Archaeoastronomy

ZH_1_12 — Astronomical Instruments: Astrolabe, Armillary, Quadrant

The history of astronomical instruments — devices for measuring the positions, motions, and timing of celestial bodies — is inseparable from the history of astronomy itself. From the gnomon (the simplest shadow-casting s

astrolabe armillary sphere quadrant sextant gnomon sundial
C_5_29 Verified Global Traditions

C_5_29 — Moon Mythology: Lunar Deities, Cycles, and Symbolism Across Cultures

The Moon — the most visible and regularly changing celestial object — has been a primary religious and mythological symbol for every known culture. Its predictable cycle of waxing, full, waning, and new (approximately 29

Moon lunar deity Selene Thoth Chang'e Tsukuyomi
C_5_03 Verified Global Traditions

C_5_03 — Indigenous Knowledge Systems

Indigenous knowledge systems represent the longest-running experiments in human survival — the Australian Aboriginal peoples have maintained continuous cultural practice for 65,000+ years, making theirs the oldest living

indigenous knowledge traditional ecological knowledge TEK Aboriginal Dreamtime oral tradition songlines
ZF_3_18 Verified Oceanography

ZF_3_18 — Microplastic Pollution in the Ocean

Microplastics — plastic particles <5 mm in diameter — have become one of the most pervasive and persistent pollutants in the global ocean, present from surface waters to the deepest hadal trenches, from Arctic sea ice to

microplastic ocean-pollution marine-debris nanoplastic bioaccumulation great-pacific-garbage-patch
ZF_5_00 Oceanography

ZF_5_00 — Ocean Technology Policy: Subfolder Summary

ZF_5_03 Verified Oceanography

ZF_5_03 — Marine Protected Areas: Conservation Zones, No-Take Reserves, and Effectiveness

Marine Protected Areas (MPAs) are designated ocean regions where human activity is restricted or managed to conserve biodiversity, protect habitats, and sustain marine resources. Ranging from lightly managed multiple-use

marine protected area MPA no-take reserve marine reserve marine conservation IUCN categories
ZF_5_08 Verified Oceanography

ZF_5_08 — Coastal Geomorphology: Erosion, Beaches, and Barrier Islands

Coastal geomorphology is the study of landforms at the interface of land and sea — a dynamic zone shaped by the constant interaction of waves, tides, currents, wind, rivers, geology, biology, and increasingly by human ac

coastal geomorphology coastal erosion beach barrier island sea cliff longshore drift
ZF_4_03 Verified Oceanography

ZF_4_03 — Desalination and Ocean Water Resources

Desalination — the removal of dissolved salts from seawater or brackish water to produce freshwater — has become an increasingly critical technology as global freshwater demand rises and climate change intensifies drough

desalination reverse osmosis water scarcity brine discharge membrane technology thermal desalination
ZF_4_02 Verified Oceanography

ZF_4_02 — Ocean Pollution and Plastic Debris

Ocean pollution encompasses the introduction of harmful substances and materials into the marine environment, degrading water quality, damaging ecosystems, and threatening human health. The major categories are: plastic

marine pollution plastic debris microplastic ocean garbage patch oil spill marine litter
ZF_4_18 Verified Oceanography

ZF_4_18 — Deep Ocean Microplastics

Deep ocean microplastics — synthetic polymer particles smaller than 5 mm that have infiltrated the deepest marine environments on Earth — represent one of the most alarming and poorly understood dimensions of global plas

microplastics nanoplastics deep sea ocean floor Mariana Trench sediment
ZF_4_00 Oceanography

ZF_4_00 — Ocean Chemistry Climate: Subfolder Summary

ZF_0_00 Oceanography

ZF_0_00 — Oceanography & Marine Science: Section Summary

K_3_05 Credible Consciousness

K_3_05 — Extended Mind and Cognitive Extension

The extended mind thesis (EMT), proposed by Andy Clark and David Chalmers in their landmark 1998 paper "The Extended Mind," argues that cognitive processes need not be confined within the skull — external objects, tools,

extended mind cognitive extension Clark and Chalmers parity principle Otto's notebook scaffolded cognition
K_3_00 Consciousness

K_3_00 — Consciousness Variants: Subfolder Summary

K_1_17 Verified Consciousness

K_1_17 — Integrated Information Theory: Phi, Axioms & Empirical Tests

Integrated Information Theory (IIT), developed primarily by Giulio Tononi (University of Wisconsin–Madison) from 2004 to the present, proposes that consciousness is identical to integrated information — a quantity denote

integrated-information-theory iit phi giulio-tononi consciousness-axioms qualia-space
K_1_10 Credible Consciousness

K_1_10 — Panpsychism — Comprehensive Survey

Panpsychism — the view that consciousness or experiential properties are fundamental and ubiquitous features of the physical world — has experienced a dramatic revival in analytic philosophy since the early 2000s, driven

panpsychism panprotopsychism Chalmers Galen Strawson Russellian monism combination problem
E_3_05 Verified Cataclysms & Chronology

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

Pleistocene megafauna extinction overkill hypothesis Paul Martin mammoth giant sloth
E_2_07 Verified Cataclysms & Chronology

E_2_07 — The 4.2 Kiloyear Event — Bronze Age Climate Catastrophe

The 4.2 kiloyear event (~2200 BCE) was a severe, century-scale aridification episode that constitutes one of the most significant abrupt climate changes of the Holocene. Identified through speleothem, marine sediment, an

4.2 kiloyear event megadrought Akkadian Empire collapse Old Kingdom Egypt Indus Valley decline Liangzhu collapse