Generally speaking, bigger families consume more than smaller ones: food, cars, and houses grow to accommodate more members. In an effort to lessen the carbon footprint imposed by the human race, Jonathon Porritt, the chair of Britain's Sustainable Development Commission said:

I am unapologetic about asking people to connect up their own responsibility for their total environmental footprint and how they decide to procreate and how many children they think are appropriate...I think we will work our way towards a position that says that having more than two children is irresponsible. It is the ghost at the table. We have all these big issues that everybody is looking at and then you don’t really hear anyone say the “p” word.

Perhaps the rest of the world will implement China's One Child Law and keep Mother Earth healthy. Tell mommy, this Earth Day, will you recycle bottles, flush the toilet less and use birth control to lessen your impact?