David Baker, PhD, is a history and science writer who holds the world's first PhD in Big History (the field that considers the entire history of the universe). He is an award-winning lecturer who wrote the YouTube series Crash Course Big History, hosted by John Green and his brother Hank Green. He lives in Sydney, Australia.

John Green is the award-winning author of mega-bestsellers like The Fault in Our Stars (over five million copies sold) and The Anthropocene Reviewed.

Contents
Foreword by John Green
Introduction
Part One: The Inanimate Phase
The Big Bang
Stars, Galaxies, and Complexity
Origin of the Earth
Part Two: The Animate Phase
Life and Evolution
Explosions and Extinctions
Primate Evolution
Part Three: The Cultural Phase
Human Foragers
The Dawn of Agriculture
Agrarian States
The Unification of the World
The Anthropocene
Part Four: The Unknown Phase
The Near and Deep Future
Acknowledgments
Further Reading
Image Credits
Index