K_5_07 — Psychophysics: Measuring the Relationship Between Mind and World

Psychophysics — literally "the physics of the soul/mind" — is the scientific study of the quantitative relationship between physical stimuli and the sensations and perceptions they produce. Founded by Gustav Theodor Fech

K_5_09 — Consciousness and Time Perception: How the Brain Creates Now

Time is perhaps the most intimate dimension of consciousness: every conscious experience occurs in time, and our sense of temporal flow — the feeling that time "passes," that the present moment is real and moving forward

K_5_03 — Psychosomatic Medicine and Mind–Body Interaction

Psychosomatic medicine investigates the bidirectional relationship between psychological processes and physical health — how mental states, emotions, beliefs, and social contexts influence bodily disease, and how physica

K_5_01 — Neurophenomenology and First-Person Science

Neurophenomenology — the research program proposed by Francisco Varela (1996) — seeks to bridge the "explanatory gap" between objective neuroscience and subjective experience by integrating rigorous first-person phenomen

K_5_21 — Entoptic Phenomena: Neural Basis of Universal Visual Patterns

Entoptic phenomena are visual experiences generated within the eye or visual nervous system rather than by external stimuli. They include phosphenes (light flashes from pressure on the eye or electrical stimulation), for

E_3_07 — Late Bronze Age Collapse

The Late Bronze Age Collapse (c. 1200–1150 BCE) was one of the most dramatic civilizational catastrophes in human history — a cascade of destructions, abandonments, and systemic failures that ended the interconnected pal

E_3_04 — Doggerland and Sundaland — Drowned Continental Shelves

Doggerland and Sundaland represent two of the most significant landmasses lost to post-glacial sea level rise, together encompassing hundreds of thousands of square kilometers of habitable terrain that was progressively

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

E_3_11 — Earthquake Archaeology and Seismic Catastrophes

Archaeoseismology — the study of past earthquakes using archaeological evidence — reveals that seismic catastrophes have repeatedly destroyed, reshaped, and sometimes permanently ended ancient urban centers and entire ci

E_3_01 — Rise and Fall of Civilizations

Every complex civilization in recorded history has collapsed or been transformed beyond recognition. The Bronze Age collapse (~1177 BCE) destroyed the interconnected civilizations of the eastern Mediterranean within a si

E_3_02 — Catastrophic Flood Geomorphology

Earth's surface preserves dramatic evidence of catastrophic floods on a scale unimaginable today. The Channeled Scablands of Washington State were carved by the Missoula Floods (~13,000–15,000 BP): glacial Lake Missoula

E_3_12 — Agriculture: Origins, Spread, and Civilizational Impact

Agriculture — the deliberate cultivation of plants and domestication of animals for food, fiber, and other products — is arguably the single most consequential technological and social transformation in human history, se

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

E_2_26 — Lake Agassiz: Drainage, Climate Disruption, and the Younger Dryas

Glacial Lake Agassiz was the largest proglacial lake in North American history — a vast freshwater body that existed from approximately 13,000 to 8,200 years ago at the southern margin of the retreating Laurentide Ice Sh

E_2_05 — Late Antiquity Little Ice Age (536–660 CE) and the Fall of Antiquity

The period 536–660 CE represents one of the most catastrophic environmental and civilizational crises in recorded human history, now termed the Late Antiquity Little Ice Age (LALIA). It began in 536 CE — described by his

E_2_09 — Heinrich Events and Bond Cycles: Millennial-Scale Climate Oscillations

Heinrich events are episodes of massive iceberg discharge from the Laurentide Ice Sheet through Hudson Strait into the North Atlantic, depositing distinctive layers of ice-rafted debris (IRD) across the ocean floor. Firs

E_2_03 — Santorini/Thera Eruption and Minoan Collapse

Around 1600 BCE (revised range: 1628–1600 BCE), the volcanic island of Thera (modern Santorini) in the southern Aegean Sea experienced one of the largest volcanic eruptions in recorded human history — a VEI-7 event that

E_2_00 — Volcanic Climate Events: Subfolder Summary

E_2_16 — Laacher See Eruption: European Catastrophe at 12,900 BP

The Laacher See eruption — centered on the Laacher See caldera in the East Eifel Volcanic Field of western Germany, approximately 37 km south of Bonn — was the largest volcanic eruption in central Europe during the late

E_2_02 — Toba Supervolcano and the 74,000 BP Genetic Bottleneck

Approximately 74,000 years ago, the Toba supervolcano on the island of Sumatra (modern Indonesia) produced the largest volcanic eruption in the last 2 million years: a VEI-8 (Volcanic Explosivity Index maximum) event tha