In the United States ecological footprint of each person is about 9.4 hectares. The Earth presently has 11.4 billion hectares of productive land and water. If everyone in the world lived at the same level of consumption as the average American about how many earths would we need to survive according to the ecological footprint analysis?

Question

Quizplus · Accepted Answer

To find out how many Earths would be needed, divide the total global productive land and water (11.4 billion hectares) by the ecological footprint per person (9.4 hectares). With a global population of approximately 7.9 billion, the calculation shows that about five Earths would be required.

In the United States Ecological Footprint of Each Person Is