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Tag: "societies" at biology news

Undergraduate research shows leaderless honeybee organizing

...aring and education. Like human civilizations, bee societies follow organizational principles, such as followin...r, a great mystery still remains regarding how bee societies effectively direct and coordinate complex operations without a central controlling intelligence. Pie...

Ants show us how to make super-highways

...dy provides rare quantitative evidence from animal societies that extreme specialisation by a minority can significantly improve the performance of a majority to benefit the group as a whole. It also suggests that these benefits are a consequence of the unusual and derived foraging strategy of the army ant (Ec...

Why aren't humans furry? Stone-Age moms could be the answer

... died in 2003. Harris' paper describes Stone Age societies in which the mother of a newborn had to decide whether she had the resources to nurture her baby. The newborn's appearance probably influenced whether the mother kept or abandoned it. An attractive baby was more likely to be kept and reared. Harri...

20-year study shows significant rise in childhood obesity, especially among girls

... fellow at the University of Chicago, USA. "As societies become more technological, various aspects of everyday life demand less and less physical activity and this is bound to contribute to childhood obesity. "And as overweight and obese children become overweight and obese adults they run a much highe...

Power emerges from consensus in monkey social networks

...bout power is an important organizing principle in societies in which conflicts are complicated, often involving many group members at once," explains Krakauer. "In such cases, only individuals widely perceived as powerful will be able to terminate or reduce the severity of these conflicts. Power structure is ...

Older fathers more likely to have autistic children

...by the sociocultural environment and varies across societies and over time," they continue. "In a given population, a change in the sociocultural environment could produce a change in paternal age at birth. In theory, it could thereby lead to a change in the incidence of genetic causes of autism." "Althoug...

Species unique to tidal marshes face threats

... umbrella organization for professional scientific societies and organizations that are involved with biology. It represents some 200 member societies and organizations with a combined membership of about 250,000. ...

Dominant meerkats render rivals infertile

...is actually a more widespread phenomenon in animal societies than was previously recognised". Dr Andrew Young's research is part of the Kalahari Meerkat Project, located at the Kuruman River Reserve, South Africa. The project is a decade-old initiative led by Professor Tim Clutton-Brock FRS, Department of Z...

Polynesia explorers created worldwide web of scientific knowledge

...e of travelers expected to find the same "natural" societies in Polynesia that had been discovered earlier in the Americas and "became the stuff of European stereotypes," Liebersohn said. What they encountered, however, "defied their expectations": sophisticated societies, physical beauty, sexual freedom, tatt...

Wild vs. lab rodent comparison supports hygiene hypothesis

...t may help to explain why people in industrialized societies that greatly stress hygiene have higher rates of a...toimmune diseases than do people in less developed societies in which hygiene is harder to achieve or considered less critical. The prevailing hypothesis concer...

Predicting successful outcomes in living-donor liver transplants

... (ILTS). The journal is published on behalf of the societies by John Wiley & Sons, Inc. and is available online via Wiley InterScience at http://www.interscience.wiley.com/journal/livertransplantation . Monitoring liver function following LDLT is crucial and identifying poor function as early as possible...

The first baby boom

... "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. ...

ASU researchers find link between social behavior, maternal traits in bees

... Davis. Honeybees live in highly complex communal societies that include divisions of labor among worker bees. Workers are female bees whose jobs include cleaning, maintaining and defending the hive, raising the young and foraging for nectar and pollen. Other species of bees, like carpenter bees, do not enga...

Cyclosporine inhibits hepatitis C virus in vitro

... (ILTS). The journal is published on behalf of the societies by John Wiley & Sons, Inc. and is available online via Wiley InterScience ( http://www.interscience.wiley.com/journal/livertransplantation ). Hepatitis C always recurs after liver transplantation, often damaging the new organ and rendering pati...

Anti-HIV drug has potential to prevent transmission in women

...ugh condoms can offer protection from HIV, in many societies women's legal and social status is subordinate to men's and they may not be able to negotiate their effective use, the paper states. "A safe and effective topical microbicide would offer women an HIV prevention method that they could control," Maye...

Alcoholism, smoking and genetics among Plains American Indians

...een anxiety and drinking patterns," she said. "In societies where regular, daily drinking is the norm, such as...m through using alcohol as a coping mechanism. In societies where heavy, periodic drinking bouts are the norm, such as in some American Indian tribes, anxious M...

Ancient humans brought bottle gourds to the Americas from Asia

...crop" would have been particularly useful to human societies before the advent of pottery and settled village life, and was apparently domesticated thousands of years before any plant was domesticated for food purposes. Radiocarbon dating indicates that bottle gourds were present in the Americas by 10,000 yea...

Why we give: New study finds evidence of generosity among our early human ancestors

...ined food exchanges in two small-scale, non-market societies ?a classic context for understanding the evolution...ruism can be a very costly endeavor in small-scale societies subsisting on wild foods," Gurven writes. "This study shows that people indeed share more with those...

Do the Europeans turn ill sitting up so late?

... the available universities, schools and research societies and provide the trainees with a versatile education. The main objective of the training is that the trainees acquire a wide international knowledge as well in basic research as in experimental and clinical research, and also in epidemiology and so...

NCAR analysis shows widespread pollution from 2004 wildfires

...lead author. "This has significant implications as societies take steps to improve air quality." Carbon monoxide, a toxic gas that can affect human health even at low levels, is emitted by wildfires as well as by motor vehicles, industrial facilities, and other sources that do not completely burn carbon-conta...

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