3steps from the big bang
115things can go into it
cement
MaterialSubstance
Making cement produces about 8% of the world's carbon dioxide emissions.
First appeared1824 (202 yrs ago)
Making cement produces about 8% of the world's carbon dioxide emissions.
Making cement produces about 8% of the world's carbon dioxide emissions.
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.