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

After decades of fretting about population explosion, scientists are pointing to a long-term hidden global menace.

The household. More specifically, the household explosion.

In this week's Early Online edition of Population and Environment, Jianguo "Jack" Liu, director of the Michigan State University Center for Systems Integration and Sustainability, and former students Mason Bradbury and Nils Peterson present the first long-term historical look at global shifts in how people live. One large household sheltering many people is giving way across the world to households comprised of fewer people sometimes young singles, sometimes empty nesters, and sometimes just folks more enamored with privacy.

In the late 1960s, ecologist Paul Ehrlich of Stanford University sounded the alarm about population growth. Now, Liu and his colleagues are pointing out that even though population growth has been curbed, the propensity to live in smaller households is ratcheting up the impact on the natural resources and the environment worldwide.

"Long-term dynamics in human population size as well as their causes and impacts have been well documented," said Liu, who is the Rachel Carson Chair in Sustainability. "But little attention has been paid to long-term trends in the numbers of households, even though households are basic consumption units."

More households require more lumber and other building materials. Smaller households are generally less efficient, with fewer people using proportionally more energy, land and water. Liu, with Ehrlich and others, published a paper in Nature in 2003 noting that the number of households globally was outpacing population growth between 1985 and 2000.

The latest research delves significantly further into history. Reviewing data dating back to 1600, the researches revealing that household size has been declining in some countries for centuries, adding a largely unaccounted for 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.


'/>"/>

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

Related biology news :

1. When populations collide
2. Population stability hope in species response to climate change
3. Genetic background of sporadic amyotrophic lateral sclerosis in the Chinese Han population
4. Study finds Catalina Island Conservancy contraception program effectively manages bison population
5. Argonne partners with Metropolitan Water Reclamation District to study Chicago River microbe population
6. New study identifies 5 distinct humpback whale populations in North Pacific
7. UI biology professor finds Goldilocks effect in snail populations
8. Population Council to present more than 40 studies at International Conference on Family Planning
9. Genetic rarity rules in wild guppy population, study finds
10. Aboriginal hunting practice increases animal populations
11. Caribbeans native predators unable to stop aggressive lionfish population growth
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/6/2017)... 2017 RAM Group , Singaporean ... breakthrough in biometric authentication based on a ... to perform biometric authentication. These new sensors are based ... by Ram Group and its partners. This sensor will ... chains and security. Ram Group is a next ...
(Date:4/18/2017)... SUNNYVALE, Calif. , April 18, 2017  Socionext Inc., a ... prototype of a media edge server, the M820, which features the ... face recognition software provided by Tera Probe, Inc., will be showcased ... and at the NAB show at the Las Vegas ... ...
(Date:4/13/2017)... , April 13, 2017 According to a ... Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment ... the IAM Market is expected to grow from USD 14.30 Billion in ... Rate (CAGR) of 17.3%. ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... a leading provider of patient support solutions, has announced the ... which will launch this week. The VMS CNEs will address ... enhance the patient care experience by delivering peer-to-peer education programs ... to help women who have been diagnosed and are being ... ...
(Date:10/11/2017)... ... October 11, 2017 , ... Disappearing forests and increased emissions are the main ... people each year. Especially those living in larger cities are affected by air pollution ... of the most pollution-affected countries globally - decided to take action. , “I knew ...
(Date:10/11/2017)... Bay, Florida (PRWEB) , ... October 11, 2017 ... ... and Drug Administration (FDA) has granted orphan drug designation to SBT-100, its novel ... (sdAb) for the treatment of osteosarcoma. SBT-100 is able to cross the cell ...
(Date:10/10/2017)... , ... October 10, 2017 ... ... cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed licensing ... HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration with Children’s ...
Breaking Biology Technology: