RESEARCH BASE

Search 3,717 documents across 34 fields — every claim tier-rated by evidence

3,717 documents 34 sections 47,686 citations 34,596+ keywords indexed 4 evidence tiers

185 results for "iron" — page 8 of 10

E_0_00 Cataclysms & Chronology

E_0_00 — Cataclysms & Chronology: Section Summary

J_4_15 Credible Ancient Technology

J_4_15 — Inuit Engineering & Arctic Technology

Inuit engineering represents one of humanity's most remarkable technological adaptations to extreme environmental conditions — Arctic and Subarctic peoples (including Inuit, Yupik, and Iñupiat groups across northern Cana

Inuit technology igloo qamutiik qajaq kayak umiak
ZB_2_12 Ecology & Biology

ZB_2_12 — Biological Scaling and Allometry

Allometry — the study of how biological characteristics scale with body size — reveals some of the most universal quantitative laws in biology. From bacteria to blue whales, spanning 21 orders of magnitude in body mass,

allometry biological scaling metabolic scaling Kleiber's law quarter-power scaling three-quarter power
ZB_2_00 Ecology & Biology

ZB_2_00 — Organismal Biology Physiology: Subfolder Summary

ZB_1_09 Ecology & Biology

ZB_1_09 — Tool Use in Animals

Tool use — defined as the deployment of an external object to alter the form, position, or condition of another object or organism — was once considered uniquely human. Since Jane Goodall's 1960 observation of chimpanzee

tool use animal cognition crow New Caledonian crow chimpanzee orangutan
ZB_5_14 Verified Ecology & Biology

ZB_5_14 — Conservation Biology

Conservation biology — the scientific study of biodiversity loss and the methods to protect species, habitats, and ecosystems — was formally established as a discipline by Michael Soulé (University of California, San Die

conservation biology biodiversity endangered species habitat fragmentation minimum viable population extinction vortex
ZB_5_16 Verified Ecology & Biology

ZB_5_16 — Ecosystem Services Quantification

Ecosystem services quantification attempts to assign monetary or biophysical values to the benefits that natural systems provide to humanity — including pollination, water purification, carbon sequestration, flood regula

ecosystem-services natural-capital pollination-value TEEB payment-for-ecosystem-services biodiversity-economics
ZB_0_00 Ecology & Biology

ZB_0_00 — Ecology & Organismal Biology: Section Summary

ZB_4_03 Verified Ecology & Biology

ZB_4_03 — Desert Biology and Xerophytes

Deserts — regions receiving <250 mm of annual precipitation — cover ~33% of Earth's land surface and harbor organisms with some of the most remarkable adaptations in biology. Desert organisms face extreme challenges: wat

desert ecology xerophyte arid adaptation CAM photosynthesis water conservation succulent
ZB_3_04 Ecology & Biology

ZB_3_04 — Ecological Succession

Ecological succession — the process of community change over time following a disturbance or the creation of new habitat — is one of ecology's oldest and most studied concepts. Primary succession occurs on newly exposed

ecological succession primary succession secondary succession climax community pioneer species sere
ZB_3_00 Ecology & Biology

ZB_3_00 — Ecosystem Ecology: Subfolder Summary

ZB_3_25 Verified Ecology & Biology

ZB_3_25 — Invasive Species and Ecosystem Disruption

Biological invasions — the introduction and establishment of species outside their native range through human activity — are recognized as one of the top five drivers of global biodiversity loss alongside habitat destruc

invasive species biological invasion ecosystem disruption biodiversity loss introduction pathway island ecology
ZC_3_04 Verified Social Science

ZC_3_04 — Sociology of Food and Agriculture

Sociology of food examines food as a social phenomenon — how production, distribution, preparation, and consumption are shaped by power, culture, class, gender, and global economic structures. Sidney Mintz (Sweetness and

food sociology agriculture food systems food security agribusiness organic farming
ZC_5_10 Verified Social Science

ZC_5_10 — Sociology of Disaster: Vulnerability, Resilience, and Social Amplification of Risk

The sociology of disaster studies the social dimensions of catastrophic events — earthquakes, floods, hurricanes, pandemics, industrial accidents, nuclear meltdowns, wildfires, and increasingly, climate-driven extreme ev

disaster sociology vulnerability resilience social amplification of risk Quarantelli climate disasters
ZC_5_00 Social Science

ZC_5_00 — Modern Applied Social Science: Subfolder Summary

O_1_12 Credible Earth Anomalies

O_1_12 — The Hum: Worldwide Low-Frequency Acoustic Anomaly

"The Hum" refers to a persistent, low-pitched, droning noise perceived by a small but significant percentage of the population (estimated 2–11% depending on the locality and study) in diverse locations worldwide. The Hum

the Hum low-frequency noise infrasound Taos Hum Bristol Hum Windsor Hum
O_1_15 Verified Earth Anomalies

O_1_15 — Urban Heat Islands

The urban heat island (UHI) effect — the phenomenon whereby urban areas experience significantly higher temperatures than surrounding rural landscapes — was first scientifically documented by amateur meteorologist Luke H

urban heat island UHI surface temperature impervious surfaces albedo anthropogenic heat
O_0_00 Earth Anomalies

O_0_00 — Earth Science & Anomalies: Section Summary

O_4_05 Earth Anomalies

O_4_05 — Desertification, Green Sahara & Landscape Transformation

Between approximately 11,000 and 5,000 years BP, the Sahara — today the world's largest hot desert — was a green, well-watered landscape of lakes, rivers, and grasslands supporting hippopotami, crocodiles, fish, and larg

Green Sahara African Humid Period desertification Holocene Gobero orbital forcing
O_3_20 Verified Earth Anomalies

O_3_20 — Microplastics, Nanoplastics, and the Ubiquitous Contamination Crisis

Microplastics — plastic particles smaller than 5 mm in diameter, with nanoplastics defined as smaller than 1 μm — have become the most pervasive anthropogenic contaminant on Earth. Since mass production of synthetic poly

microplastics nanoplastics ocean pollution plastic contamination Great Pacific Garbage Patch bioaccumulation