3steps from the big bang
115things can go into it
refinery
SystemPlace
A refinery boils crude oil and separates it into fuels and chemicals by their boiling points.
First appeared1856 (170 yrs ago)
A refinery boils crude oil and separates it into fuels and chemicals by their boiling points.
A refinery boils crude oil and separates it into fuels and chemicals by their boiling points.
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.