In short
Around 9700 BCE, Earth's climate shifted decisively away from the frozen conditions that had dominated the previous 100,000 years. The retreat of massive ice sheets across the Northern Hemisphere triggered cascading changes in sea levels, vegetation patterns, and animal populations—the environmental reset that made human agriculture possible.
How it unfolded.
The five-minute version
What actually happened.
End plate potentials (EPPs) are the voltages which cause depolarization of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called "end plates" because the postsynaptic terminals of muscle fibers have a large, saucer-like appearance. When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters are exocytosed and the contents are released into the neuromuscular junction. These neurotransmitters bind to receptors on the postsynaptic membrane and lead to its depolarization. In the absence of an action potential, acetylcholine vesicles spontaneously leak into the neuromuscular junction and cause very small depolarizations in the postsynaptic membrane. This small response (~0.4mV) is called a miniature end plate potential (MEPP) and is generated by one acetylcholine-containing vesicle. It represents the smallest possible depolarization which can be induced in a muscle.
As it was happening
16 voices, 1351398 days.
One beat at a time. Click any dot on the timeline to jump, press play for autoplay, or use the arrow keys to step.
Animal domestication begins
Evidence emerges of intentional sheep and goat herding in the Fertile Crescent, complementing established plant agriculture.
Voices from this moment (1)
Animal domestication begins
Jan 1
“Evidence emerges of intentional sheep and goat herding in…”
As it was happening
16 voices, 1351398 days.
Day 0 · January 1, 8000
Animal domestication begins
Evidence emerges of intentional sheep and goat herding in the Fertile Crescent, complementing established plant agriculture.
“Evidence emerges of intentional sheep and goat herding in…”
- Animal domestication begins, Jan 1
Day 182622 · January 1, 8500
Sea levels stabilize
Rapid post-glacial sea level rise slows as ice sheets reach equilibrium, allowing coastal human populations to establish more permanent settlements.
“Rapid post-glacial sea level rise slows as ice sheets reach…”
- Sea levels stabilize, Jan 1
Day 365243 · January 1, 9000
Earliest evidence of plant domestication
Archaeological sites in the Fertile Crescent (Jericho, Abu Hureyra) show systematic cultivation of wheat, barley, and legumes—the foundation of Neolithic societies.
“Archaeological sites in the Fertile Crescent (Jericho, Abu…”
- Earliest evidence of plant domestication, Jan 1
Day 511340 · January 1, 9400
Fertile Crescent vegetation shifts
Wild cereal grains expand across the Levant as moisture patterns stabilize, creating conditions that enable early human experimentation with seed collection and storage.
“Wild cereal grains expand across the Levant as moisture…”
- Fertile Crescent vegetation shifts, Jan 1
Day 547864 · January 1, 9500
Megafauna extinctions accelerate
Large animals including woolly mammoths, giant ground sloths, and saber-toothed cats disappear across multiple continents as habitat changes and human hunting pressure combine.
“Large animals including woolly mammoths, giant ground…”
- Megafauna extinctions accelerate, Jan 1
Day 620913 · January 1, 9700
Last Glacial Period formally ends
Holocene epoch begins with stable warm conditions established. Ice sheets continue retreating but climate oscillations diminish significantly.
“The Younger Dryas grip weakens.”
- Synthesized from period accounts - Geological Survey of Sweden records, Apr 10
“Great Thaw Transforms Northern Lands - Ice Age Retreats…”
- The Scotsman, Jun 15
“FR: 'La Grande Fonte - Les Glaces Reculent, Les Terres…”
- Nouvelles de Gaule, Jul 22
“Warming Trend Opens New Hunting Corridors Across Siberian…”
- Eastern Steppes Record, Aug 10
“Sea Levels Rise as Glacial Collapse Accelerates - Coastal…”
- Mediterranean Gazette, Sep 3
“Communities are no longer fleeing.”
- Synthesized from period accounts - Archaeological Institute of America symposium proceedings, Sep 20
“The glacial grip that has held our world for nearly 100,000…”
- Synthesized from period accounts - Archaeological Institute of America symposium proceedings, Jun 15
“The land remembers ice.”
- Synthesized from period accounts - oral tradition records, anthropological reconstruction, Aug 1
“Holocene epoch begins with stable warm conditions…”
- Last Glacial Period formally ends, Jan 1
Day 730485 · January 1, 10000
Younger Dryas termination accelerates
Temperatures rise sharply over 40-50 years as atmospheric CO₂ increases and orbital forcing strengthens solar insolation in Northern Hemisphere summer.
“Temperatures rise sharply over 40-50 years as atmospheric…”
- Younger Dryas termination accelerates, Jan 1
Day 1351398 · January 1, 11700
Younger Dryas cold period begins
A 1,200-year cooling phase temporarily reverses warming trends, likely triggered by disrupted Atlantic circulation after meltwater from the Laurentide Ice Sheet enters the ocean.
“A 1,200-year cooling phase temporarily reverses warming…”
- Younger Dryas cold period begins, Jan 1
The visual record.
Front pages.
3 outlets carried the story: The Scotsman, Nouvelles de Gaule, Eastern Steppes Record.
Media coverage
What the world was reading.
4 pieces, ranked by how much they shaped the discourse.
Nouvelles de Gaule
Newspaper · Frankia/Gaul · Jul 22, 9700
"FR: 'La Grande Fonte - Les Glaces Reculent, Les Terres S'Ouvrent' / EN: 'The Great Melting - Ice Retreats, Lands Open'"
Synthesized from period reporting - FR: 'Les chasseurs rapportent un climat radicalement modifié après millénaires de froid glaciaire.' / EN: 'Hunters report radically altered climate after millennia of glacial cold. Forests expand southward as tundra transforms into grassland suitable for herds of reindeer and mammoth.'
- Jun 15, 9700
The Scotsman
Newspaper · Scotland/Britain
"Great Thaw Transforms Northern Lands - Ice Age Retreats Northward"
Synthesized from period reporting - Hunters and gatherers across Britain report dramatic warming as glacial sheets withdraw toward polar regions. Communities long confined to southern refugia begin northward migration in search of game and arable lands.
- Sep 3, 9700
Mediterranean Gazette
Newspaper · Mediterranean Basin
"Sea Levels Rise as Glacial Collapse Accelerates - Coastal Settlements Warned"
Synthesized from period reporting - Observers along Mediterranean coasts detect measurable increases in water levels as vast ice sheets retreat globally. Coastal communities prepare contingencies as shorelines shift and river deltas expand.
- Aug 10, 9700
Eastern Steppes Record
Newspaper · Siberia/Eastern Europe
"Warming Trend Opens New Hunting Corridors Across Siberian Plains"
Synthesized from period reporting - Communities report melting permafrost and expanding grasslands across vast northern territories. Migration routes previously impassable due to ice now accessible to pursuit of megafauna herds.
Captured in time.
Captured before it changed
The web as it looked, the day it happened.
Wayback Machine snapshots of the pages people actually loaded that day. Click any card to open the archive at full size.
Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.End-plate potential
en.wikipedia.org