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.

784 results for "arch" — page 29 of 40

A_1_23 Verified Foundations

A_1_23 — Proto-Writing & Token Systems: Precursors to Cuneiform

The invention of writing in Mesopotamia around 3200 BCE was not a sudden innovation but the culmination of an 8,000-year evolution of information recording technologies. Beginning with simple geometric clay tokens in the

proto-writing clay-tokens bullae uruk-period accounting-origins cuneiform-precursors
A_1_24 Verified Foundations

A_1_24 — Natufian Culture

The Natufian culture (c. 15,000–11,500 BP) represents the critical transitional period between mobile hunter-gatherer lifeways and settled agricultural communities in the Levant. First defined by Dorothy Garrod in 1928 f

Natufian Epipalaeolithic Levant sedentism pre-agriculture plant cultivation
A_1_20 Verified Foundations

A_1_20 — Elamite and Proto-Elamite Script: Iran's Undeciphered Writing Systems

The Elamite civilization of southwestern Iran — centered on the cities of Susa and Anshan — was one of the earliest complex societies of the ancient Near East, rivaling Sumer and Akkad yet remaining far less understood d

Elamite Proto-Elamite Susa undeciphered script Elam Achaemenid Elamite
A_4_37 Credible Foundations

A_4_37 — Rig Veda Astronomical Dating Analysis

The astronomical dating of the Rig Veda is one of the most contentious and consequential problems in Indology, Vedic studies, and the broader field of ancient chronology. The Rig Veda — the oldest of the four Vedas and a

Rig Veda astronomical dating precession solstice equinox Vedic astronomy
U_0_00 Art, Music & Culture

U_0_00 — Art, Music & Culture: Section Summary

U_3_08 Verified Art, Music & Culture

U_3_08 — Glassmaking and Stained Glass

Glass — an amorphous solid formed by rapidly cooling molten silica (SiO₂) with fluxes (soda/potash to lower melting temperature) and stabilizers (lime to prevent water solubility) — has been manufactured for ~5,000 years

glass glassmaking stained glass Murano blown glass Roman glass
U_3_19 Credible Art, Music & Culture

U_3_19 — Ancient Tattooing Traditions

Tattooing is one of the oldest and most universal forms of human body modification, with archaeological evidence spanning at least 5,300 years and ethnographic documentation across every populated continent. The oldest k

tattooing ancient tattoo Ötzi Polynesian tattoo mummy tattoo body modification
U_3_18 Verified Art, Music & Culture

U_3_18 — Ancient Metallurgy and Material Innovation

Ancient metallurgy — the extraction, alloying, and shaping of metals from raw ores — was among the most transformative technological achievements of human civilization, enabling new tools, weapons, agricultural implement

ancient-metallurgy bronze-age iron-smelting copper alloys bloomery
U_3_06 Verified Art, Music & Culture

U_3_06 — Woodworking and Carpentry Traditions

Woodworking — the shaping of wood for functional and aesthetic purposes — is among the oldest human technologies, predating metalworking by millennia. Archaeological evidence: the Schöningen spears (Germany, ~300,000 yea

woodworking carpentry joinery timber framing Japanese joinery shipbuilding
U_2_09 Verified Art, Music & Culture

U_2_09 — Art Nouveau and Art Deco

Art Nouveau (~1890–1910) and Art Deco (~1920–1940) are two of the most distinctive and influential decorative art movements, representing contrasting aesthetic responses to industrialization and modernity. Art Nouveau (k

Art Nouveau Art Deco Jugendstil Sezessionstil Modernisme decorative arts
U_2_20 Credible Art, Music & Culture

U_2_20 — Islamic Geometric Art: Pattern, Calligraphy & Arabesque

Islamic geometric art — one of the most sophisticated and mathematically advanced artistic traditions in human history — developed from the 8th century CE across a vast geographic range from Andalusia to Central Asia, pr

islamic-art geometric-patterns calligraphy arabesque girih-tiles muqarnas
U_2_17 Credible Art, Music & Culture

U_2_17 — Death Masks & Funerary Portraiture

Death masks — three-dimensional representations of a deceased person's face, typically created by molding plaster, wax, or metal directly over the corpse's features — represent one of humanity's oldest artistic and ritua

death mask funerary mask Mask of Agamemnon Tutankhamun Fayum portraits Roman imagines
X_2_16 Verified Medicine & Healing

X_2_16 — Evidence-Based Medicine and Clinical Trials

Evidence-based medicine (EBM) — the systematic integration of the best available research evidence with clinical expertise and patient values to guide medical decision-making — was formalized as a paradigm by Gordon Guya

evidence-based-medicine randomized-controlled-trial cochrane meta-analysis systematic-review blinding
X_1_08 Verified Medicine & Healing

X_1_08 — Water & Healing: Hydrotherapy, Sacred Springs, Mineral Waters

Water has been the most universally venerated healing substance across human civilizations — from Mesopotamian purification rituals (3000 BCE) through Greek thermae, Roman bathhouse networks (900+ documented across the e

hydrotherapy balneotherapy thermal springs mineral water sacred springs holy well
X_1_00 Medicine & Healing

X_1_00 — Traditional Ancient Medicine: Subfolder Summary

W_4_10 Verified World Civilizations

W_4_10 — Pueblo, Hopi, and Navajo Civilizations of the American Southwest

The Pueblo, Hopi, and Navajo (Diné) peoples of the American Southwest represent some of the most culturally continuous civilizations in the Americas, with archaeological records extending over 2,000 years and oral tradit

Pueblo Hopi Navajo Diné Ancestral Puebloan Anasazi
W_4_15 Credible World Civilizations

W_4_15 — Ancestral Puebloan: Chaco Canyon, Mesa Verde, and Cliff Dwellings

The Ancestral Puebloan peoples (formerly "Anasazi" — a Navajo term meaning "ancient ones" or "ancient enemies," now considered disrespectful by many Puebloan descendants) developed one of the most architecturally and ast

Ancestral Puebloan Anasazi Chaco Canyon Mesa Verde cliff dwellings kiva
W_4_19 Verified World Civilizations

W_4_19 — Mississippian Culture and Cahokia

The Mississippian culture (~800–1600 CE) was the most complex and widespread pre-Columbian society in eastern North America, characterized by large-scale earthen mound construction, intensive maize agriculture, hierarchi

mississippian cahokia mound-builders monks-mound north-america pre-columbian
W_1_13 Verified World Civilizations

W_1_13 — Mesopotamian Daily Life and Urban Civilization

Beyond the well-known temples, ziggurats, and royal inscriptions, the cuneiform record preserves an extraordinarily detailed picture of everyday Mesopotamian life spanning over 3,000 years. Tens of thousands of clay tabl

Mesopotamia Sumer Babylon Ur cuneiform daily life
W_2_24 Verified World Civilizations

W_2_24 — Chola Empire

The Chola Empire (c. 300 BCE – 1279 CE), with its imperial zenith under Rajaraja I (r. 985–1014 CE) and Rajendra I (r. 1014–1044 CE), was the most powerful naval and territorial state in medieval South and Southeast Asia

Chola dynasty Rajaraja I Rajendra I Brihadishvara temple Indian Ocean trade Nagapattinam