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.
24 results for "shell mounds" — page 1 of 2
M_5_28 — Japanese Archaeology: Jōmon Culture and Ancient Japan
The Jōmon period (c. 14,000–300 BCE) represents one of the longest continuous cultural traditions in human history and challenges standard models of social evolution. The Jōmon produced the world's oldest known pottery (
W_2_27 — Jōmon Civilization: Japan's 14,000-Year Pre-Agricultural Complex Society
The Jōmon culture of Japan (~14,000–300 BCE) represents one of the most extraordinary challenges to conventional models of human development. [KEY FINDING] Jōmon people produced the world's oldest known pottery (radiocar
U_3_03 — Ancient Jewelry, Adornment & Shell Bead Trade
Personal adornment is among the oldest archaeological markers of symbolic behavior, with the earliest known ornaments — perforated Nassarius shell beads from Blombos Cave, South Africa, and sites in North Africa and the
ZB_1_14 — Animal Architecture: Nests, Webs, Mounds, and Biological Engineering
Animal architecture — the construction of physical structures by non-human organisms for shelter, reproduction, thermoregulation, prey capture, mate attraction, or environmental modification — represents one of the most
D_3_01 — Serpent Mound & Effigy Mounds
The Great Serpent Mound in Adams County, Ohio is the largest surviving effigy mound in the world at 1,348 feet (411 m), depicting a sinuous serpent with seven undulating curves and an egg-shaped feature at its head. It c
M_5_18 — Mound Builders: Adena, Hopewell, Mississippian, and the Erasure of Indigenous Achievement
The "Mound Builders" refers to the diverse Indigenous North American cultures that constructed elaborate earthen mounds across eastern North America from approximately 3700 BCE (Watson Brake, Louisiana) through European
W_4_04 — Mississippian Culture — Cahokia, Mound Builders, and the Southeastern Ceremonial Complex
Cahokia, located near present-day East St. Louis, Illinois, was the largest pre-Columbian settlement north of Mexico, reaching a peak population of 20,000 or more around 1050-1200 CE. The site features Monks Mound — the
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
W_1_25 — Dilmun: Sacred Land of the Persian Gulf
Dilmun (Sumerian: NI.TUK.KI; also spelled Telmun) was an ancient civilization and trading polity centered on present-day Bahrain, with extensions to Failaka Island (Kuwait), the eastern Arabian coastal region, and possib
W_2_01 — Jōmon People and Pre-Yamato Japan
This document examines Jōmon People and Pre-Yamato Japan, a topic within the Global Traditions research area. Key areas of investigation include Chronological Framework, The Oldest Pottery in the World, Population and Se
ZF_4_14 — Harmful Algal Blooms: Red Tides, Toxins, and Eutrophication
Harmful algal blooms (HABs) — rapid proliferations of microscopic algae (phytoplankton) or cyanobacteria that produce toxins, deplete oxygen, or otherwise damage marine ecosystems, fisheries, and human health — are incre
ZG_5_20 — Oracle Bones: Shang Dynasty Divination, Pyromancy, and the Origins of Chinese Writing
Oracle bones (jiǎgǔ 甲骨) are pieces of ox scapula and turtle plastron used for pyromantic divination during the Shang dynasty (c. 1600–1046 BCE), primarily at the royal capital Yinxu (殷墟) near modern Anyang, Henan Provinc
J_3_05 — Ancient Shipbuilding and Maritime Technology
The construction of seagoing vessels is among humanity's most consequential technological achievements, enabling colonization, trade, warfare, and cultural exchange across every major body of water on Earth. The archaeol
Q_3_15 — Icy Moons: Europa, Titan, Enceladus, and Subsurface Oceans
Among the most transformative discoveries of planetary science in the past three decades is the realization that several moons of the outer solar system — Europa (Jupiter), Enceladus (Saturn), Titan (Saturn), and Ganymed
O_5_20 — Enceladus: Saturn's Ocean Moon and the Search for Extraterrestrial Life
Enceladus, a small icy moon of Saturn (504 km diameter, roughly the size of Arizona), has emerged since the Cassini mission's discoveries (2005–2017) as arguably the most promising location in the solar system for the de
D_1_17 — Cahokia & Monks Mound
Cahokia, located near present-day Collinsville, Illinois, was the largest pre-Columbian settlement north of Mexico and the center of Mississippian culture. At its peak around 1050–1200 CE, the city covered approximately
D_3_21 — Cahokia: America's Forgotten Metropolis
Cahokia — located in the Mississippi River floodplain near present-day Collinsville, Illinois, approximately 13 km east of St. Louis, Missouri — was the largest pre-Columbian settlement north of Mexico and the center of
L_5_14 — Amino Acid Racemization Dating Method
Amino acid racemization (AAR) — a geochronological dating technique based on the chemical conversion of L-amino acids (the biologically predominant enantiomer in living organisms) to D-amino acids (the mirror-image confi
R_4_04 — Skeletal Evolution and Bone
Skeletal systems — structures providing support, protection, and locomotion — evolved independently multiple times across the animal kingdom. The Cambrian Explosion (~540–520 Mya) witnessed the near-simultaneous appearan
R_4_06 — Skeleton Evolution and Biomechanics
Skeletal systems — structures providing support, protection, and movement — have evolved independently multiple times across the tree of life, representing one of the great themes in the history of life. Three fundamenta
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