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Family planning a major environmental impact
Date:7/31/2009

CORVALLIS, Ore. Some people who are serious about wanting to reduce their "carbon footprint" on the Earth have one choice available to them that may yield a large long-term benefit have one less child.

A study by statisticians at Oregon State University concluded that in the United States, the carbon legacy and greenhouse gas impact of an extra child is almost 20 times more important than some of the other environmentally sensitive practices people might employ their entire lives things like driving a high mileage car, recycling, or using energy-efficient appliances and light bulbs.

The research also makes it clear that potential carbon impacts vary dramatically across countries. The average long-term carbon impact of a child born in the U.S. along with all of its descendants is more than 160 times the impact of a child born in Bangladesh.

"In discussions about climate change, we tend to focus on the carbon emissions of an individual over his or her lifetime," said Paul Murtaugh, an OSU professor of statistics. "Those are important issues and it's essential that they should be considered. But an added challenge facing us is continuing population growth and increasing global consumption of resources."

In this debate, very little attention has been given to the overwhelming importance of reproductive choice, Murtaugh said. When an individual produces a child and that child potentially produces more descendants in the future the effect on the environment can be many times the impact produced by a person during their lifetime.

Under current conditions in the U.S., for instance, each child ultimately adds about 9,441 metric tons of carbon dioxide to the carbon legacy of an average parent about 5.7 times the lifetime emissions for which, on average, a person is responsible.

And even though some developing nations have much higher populations and rates of population growth than the U.S., their overall impac
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Contact: Paul Murtaugh
murtaugh@science.oregonstate.edu
541-737-1985
Oregon State University
Source:Eurekalert

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