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Population bomb may be defused, but research reveals ticking household bomb
Date:2/11/2014

nuance to human's impact on the environment. In this paper, Liu and his colleagues call for households to be more centrally included in calculating human's impact on the environment, and caution against thinking that slowing population growth is a cause for celebration.

Average household size in developed countries declined rapidly from approximately 5 members in 1893 to 2.5 at present, while the rapid decline in average household size in developing nations began around 1987. The number of households grew faster than population size in almost every country and every time.

"We've documented that the changes we're seeing in household size across the globe essentially doubles the number of homes needed per-capita," Peterson said. "This will put enormous strain on the environmental life support system we rely on, even if we achieve a state of zero population growth."

The researchers point out that the environmental footprint becomes more of a trail. The new homes usually eventually require more roads, more yards and more commercial development.


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Contact: Sue Nichols
nichols@msu.edu
517-432-0206
Michigan State University
Source:Eurekalert

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