This page is generated directly from the links embedded in every chapter, so it stays honest to what the library actually cites. Entries are de-duplicated within each chapter and shown with their source domain. Institutions lean on USGS, NASA, Nature, PNAS, the Smithsonian, Britannica, the Natural History Museum, PBS Eons, and the like.
Sources
Nucleosynthesis
Cosmic-Prequel-The-Star-Forges.html · 9 links
Sources
Chemistry
Cosmic-Prequel-The-Logic-of-Chemistry.html · 10 links
Sources
How to Read a Planet
Part-0-The-Toolkit.html · 13 links
Sources
Geochronology
Part-0-Deep-Dive-How-We-Read-the-Rocks.html · 15 links
Sources
Hadean · 4.6–4.0 Ga
Part-1-Birth-of-a-World.html · 10 links
Sources
Accretion & the Moon
Part-1-Deep-Dive-Birth-of-a-World.html · 13 links
Sources
Archean · 4.0–2.5 Ga
Part-2-First-Whispers-of-Life.html · 14 links
Sources
Abiogenesis
Part-2-Deep-Dive-First-Whispers-of-Life.html · 14 links
Sources
Proterozoic · 2.5 Ga–541 Ma
Part-3-The-Great-Oxygen-Revolution.html · 15 links
Sources
Endosymbiosis
Part-3-Deep-Dive-The-Great-Oxygen-Revolution.html · 15 links
Sources
Paleozoic · 541–252 Ma
Part-4-Explosion-and-Invasion.html · 14 links
Sources
Cambrian & the Land
Part-4-Deep-Dive-Explosion-and-Invasion.html · 15 links
Sources
Mesozoic · 252–66 Ma
Part-5-The-Age-of-Giants.html · 14 links
Sources
Dinosaurs & Impact
Part-5-Deep-Dive-The-Age-of-Giants.html · 15 links
Sources
Cenozoic · 66 Ma–today
Part-6-The-Age-of-Mammals-and-Us.html · 13 links
Sources
Ecology · The Living Machine
Part-7-How-It-All-Works.html · 15 links
Sources
The Neolithic
Part-H2-The-First-Farmers.html · 7 links
Sources
The Bronze Age
Part-H3-Cities-Writing-and-Bronze.html · 10 links
Sources
Iron & Axial Age
Part-H4-Empires-Iron-and-Ideas.html · 10 links
Sources
Trade & Exchange
Part-H5-A-Connected-World.html · 9 links
Sources
Industry & Information
Part-H6-Fire-Steam-and-Information.html · 10 links
Sources
The Art Forms
Part-A1-The-Art-Forms.html · 10 links
Sources
Machine Vision
Part-A2-The-Machine-Learns-to-See.html · 10 links
Sources
The Whole Arc
Book-3-Woman.html · 27 links
Sources
Inventing Femininity
Book-3-Inventing-Femininity.html · 12 links
Sources
Voices & Votes
Book-3-Voices-and-Votes.html · 13 links
Sources
Warriors
Book-3-Warriors.html · 13 links
Sources
The Witch
Book-3-Deep-Dive-The-Witch.html · 13 links
Sources
Number
Math-1-The-Invention-of-Number.html · 15 links
Sources
Encoding
Math-2-Encoding-the-World.html · 13 links
Sources
Knowing
Math-3-The-Asymmetry-of-Knowing.html · 12 links
Sources
Intelligence Systems I
Intel-1-Human-Intelligence-Systems.html · 18 links
Sources
Intelligence Systems II
Intel-2-Human-Intelligence-Systems.html · 24 links
Sources
The Clockwork Sky
Discovering-Mind-D2-The-Clockwork-Sky.html · 9 links
Sources
The Elements
Discovering-Mind-D3-The-Elements.html · 10 links
Sources
Evolution of Brains
Brains-1-The-History-of-Brains.html · 10 links
Sources
The Human Brain
Brains-2-Deep-Dive-The-Human-Brain.html · 11 links
Sources
Evolution of Countries
Nations-A-The-Evolution-of-Countries.html · 16 links
Sources
The Regions
Nations-1-The-Regions.html · 13 links
Sources
The Land
India-Part-1-The-Land.html · 19 links
Sources
The Word
India-Part-2-The-Word.html · 18 links
Sources
The Egg
Special-Feature-The-Egg.html · 9 links
Sources
Why We Bleed
Special-Feature-Why-We-Bleed.html · 7 links
Sources
The Female of the Species
Special-Feature-The-Female-of-the-Species.html · 8 links
Sources
The Mother
Special-Feature-The-Mother.html · 11 links
Sources
Concealed & Continuous
Special-Feature-Concealed-and-Continuous.html · 7 links
Sources
The Grandma Timeline
Special-Feature-The-Grandma-Timeline.html · 6 links
Sources
The Invention of Sex
Special-Feature-The-Invention-of-Sex.html · 14 links
Sources
Invention of Sex — Deep
Special-Feature-The-Invention-of-Sex-Deep-Dive.html · 25 links
Sources
The Body's Ancient Messengers
Special-Feature-The-Bodys-Ancient-Messengers.html · 14 links
Sources
The Mind-Altering Kingdom
Special-The-Mind-Altering-Kingdom.html · 14 links
Sources
Mind-Altering — Deep
Special-Deep-Dive-The-Mind-Altering-Kingdom.html · 26 links