Navigation Links
The first baby boom

In an important new study assessing the demographic impact of the shift from foraging to farming, anthropologists use evidence from 60 prehistoric American cemeteries to prove that the invention of agriculture led to a significant worldwide increase in birth rate.

Discussing the shifts in the demographic patterns before and after the introduction of agriculture in Europe at the end of the Stone Age, Jean-Pierre Bocquet-Appel (Ecole des Hautes Etudes en Sciences Sociales, France) writes, "The signal of a demographic change we detected ?is characterized by an abrupt 20 to 30 percent increase, over 500 to 700 years, in the proportion of immature skeletons."

While prior research has been done on the Neolithic Demographic Transition, as the increase in birth rate is known, Bocquet-Appel and Stephan Naji are the first researchers to expand the theory to a worldwide scale. In a forthcoming study in Current Anthropology, they show that though agriculture did not appear in the Americas until 7,000 ?8,000 years later, the archaeological evidence parallels the changes in Europe and North Africa that occurred with the advent of agriculture.

"The new farming system, resulting in sedentary societies vs. forager nomadism, not only greatly increased the number of people who could be fed, but also boosted individual fertility in women to a possibly unique extent on such a scale in human history," write the authors.


'"/>

Source:University of Chicago Press Journals


Page: 1

Related biology news :

1. A genes first kiss sets off that affair known as puberty
2. Love at first smell
3. Worlds largest rainforest drying experiment completes first phase
4. PCRM develops worlds first cruelty-free insulin assay
5. Expression Project for Oncology (expO) completes first phase of standardized gene expression analyses
6. World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics
7. DuPonts first biologically derived polymer receives global recognition
8. Anti cancer virotherapy well tolerated in first human administration, research finds
9. Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development
10. The first impact factor for PLoS Biology ?13.9
11. Moffitt-USF head toward first human trials of anti-cancer drug that targets protein AKT
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/18/2016)... 2016  Extenua Inc., a pioneering developer of ... and access of ubiquitous on-premise and cloud storage, today ... Cyber.  ... C4ISR and Cyber initiatives in support of National ... technology solutions," said Steve Visconti , Extenua ...
(Date:1/13/2016)... , January 13, 2016 ... the addition of the  "India Biometrics ... & Forecast (2015-2020)"  report to ... ) has announced the addition of ... Market - Estimation & Forecast (2015-2020)" ...
(Date:1/8/2016)... MANCHESTER, United Kingdom , Jan. 8, 2016   ... diagnostic products, today announced the closing of a $9 million ... Proceeds from the financing will be used to accelerate the ... for detecting early-stage pressure ulcers. United ... receiving CE Mark approval. The device,s introduction has been met ...
Breaking Biology News(10 mins):
(Date:2/8/2016)... ... February 08, 2016 , ... Information Management Services ( ... The upgrade represents a completely new technical foundation and is so significant it ... responsive design interface, significantly increased speed for search results, a streamlined layout and a ...
(Date:2/8/2016)... Stockton has an active R&D program for the ... area, the Group has a unique research and development center ... in developing Bio Control products. Stockton ... parameters and regulatory guidelines, and is active in more than ... Stockton,s flagship product Timorex Gold ...
(Date:2/6/2016)... , ... February 06, 2016 , ... ... , The Center for Excellence in Education Sponsors Teacher Training Program , ... February 4, 2016 – The Center for Excellence in Education (CEE) will sponsor ...
(Date:2/5/2016)... 5, 2016 Amarantus BioScience Holdings, ... focused on developing products for Regenerative Medicine, Neurology and ... Disease Designation (RPDD) from the US Food and Drug ... MANF was previously granted orphan drug designation (ODD) by ... Amarantus BioScience Holdings, Inc. (OTCQB: AMBS), ...
Breaking Biology Technology: