4steps from the big bang
117things can go into it
wheelbarrow
ProductObject
The wheelbarrow was used in China about 2,000 years ago, over 1,000 years before it reached Europe.
First appearedDate not yet known
Made Of
Everything is made of something.← What it takes
What it leads to →
Nothing on this map is built from it yet.
The wheelbarrow was used in China about 2,000 years ago, over 1,000 years before it reached Europe.
From the big bang to wheelbarrow
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.
big bang13.8 bn yrs ago
Hehelium13.8 bn yrs ago
CO2 laser1964
steelc. 1,800 BCE
wheelbarrowdate unknown