Now, all people are created equal, but we don’t all emit 5½ tons of CO2
per year. We can break down the emissions of the year 2000, showing how
the 34-billion-ton rectangle is shared between the regions of the world:

Greenhouse gas pollution

This picture, which is on the same scale as the previous one, divides the
world into eight regions. Each rectangle’s area represents the greenhouse
gas emissions of one region. The width of the rectangle is the population
of the region, and the height is the average per-capita emissions in that

In the year 2000, Europe’s per-capita greenhouse gas emissions were
twice the world average; and North America’s were four times the world

We can continue subdividing, splitting each of the regions into coun-
tries. This is where it gets really interesting: