Environmentalists tend to avoid the topic of population control. Too touchy. But the politically incorrect issue is becoming unavoidable as the global population lurches toward a predicted 9 billion people by mid-century. Will there be enough food? Enough water? Will planet-heating carbon dioxide gas become ever more uncontrollable?

Now comes a study (PDF) by statisticians at Oregon State University focusing on the elephant in the room. If you are serious about your carbon footprint, think: birth control.

The greenhouse gas impact of an extra child is almost 20 times more significant than the amount any American would save by such practices as driving a fuel-efficient car, recycling or using energy-efficient light bulbs and appliances, according to Paul Murtaugh, an OSU professor of statistics. Under current U.S. consumption patterns, each child ultimately adds about 9,441 metric tons of CO2 to the carbon legacy of an average parent--about 5.7 times a person's lifetime emissions, he calculates.

Labels: demographics, family size

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