"Eating the Earth" compares the environmental impact of average Italian, American, and Malaysian diets.
Some of their findings:
WWF and GOOD calculated the amount of resources the diets will consume based on how many resources are available on the Earth, and found that by 2050 people eating Malaysian Diets will need 2.48 Earths worth of resources, people eating Italian Diets will need 3.58 Earths, and people eating American Diets will need 3.74 earths.
You can download the entire graphic here: Eating the Earth