A documentary in six layers
History of
the world
From first steps to the stars. Three hundred thousand years of our road, read one layer at a time.
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The long line
Six epochs, end to end
Open any layer. Each one holds a short account, the dates that shaped it, and a plate for its illustration.
2.6 Mya – 3000 BCE Prehistory +
The longest chapter of human history: from the first split stone to the first metal. Four stages, in the order the ground holds them.
3000 BCE – 500 CE Ancient History +
Grain can be stored, and stored grain has to be counted, guarded and taxed. Within a few centuries the same answer appears along the Nile, the Tigris and Euphrates, the Indus and the Yellow River — and further west, Greece and Rome turn the same problem into law, philosophy and empire.
500 – 1500 Middle Ages +
Not a pause and not a dark age. The Migration Period reshuffles Europe as Charlemagne is crowned in Rome; crusades, feudal obligation and Gothic spires define the centuries that follow; then plague and the Hundred Years' War close them out — while Baghdad's Golden Age and a Mongol empire stretching from China to the Danube prove the centre of gravity lies elsewhere.
1500 – 1800 Early Modern Period +
Ocean voyages connect landmasses that had been separate for ten thousand years, while a revival of classical learning and a religious split remake European thought from the inside. Absolute monarchs and colonial companies extend the reach of a handful of states, and a new method for testing ideas against evidence starts to outcompete every older way of knowing.
1800 – 1945 Modern Era +
Steam and coal multiply what a person can build and move; revolution in France and reaction across Europe rewrite who gets to rule; and a century of rising nationalism and empire ends in two wars that kill on a scale nothing before had matched.
1945 – present Contemporary Era +
Two competing systems race for the rest of the century while the empires that carved up the previous one dissolve into new nations. What's left, still being built, is a single networked, interdependent world — for better and worse.
Today and tomorrow
We are the first generation to see the whole thing at once
Eight billion people share one atmosphere, one network and one set of consequences. We can read a genome, land a probe on a comet and watch an ice sheet thin in real time — and we are still arguing about how to live together, which is the oldest argument there is.
Nothing about the technology settles that question. It only raises the stakes of getting it wrong, and shortens the time available to answer.
We are made of star-stuff.CARL SAGAN