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Athens, Ga. - Debunking the myth of the "mean girl," new research from the University of Georgia has found that boys use relational aggression--malicious rumors, social exclusion and rejection--to harm or manipulate others more often than girls.

The longitudinal study, published online in the journal Aggressive Behavior, followed a cohort of students from middle to high school and found that, at every grade level, boys engaged in relationally aggressive behavior more often than girls.

This news release is available in German.

"We have not seen an ice free period in the Arctic Ocean for 2,6 million years. However, we may see it in our lifetime." says marine geologist Jochen Knies. In an international collaborative project, Knies has studied the historic emergence of the ice in the Arctic Ocean. The results are published in Nature Communications.

Peter Friedl, M.D., Ph.D., professor of genitourinary medical oncology at The University of Texas MD Anderson Cancer Center, has received one of Italy's top scientific awards for his work in imaging and cancer growth, metastasis and therapy response.

Researchers at DESY have used high-speed photography to film one of the candidates for the magnetic data storage devices of the future in action. The film was taken using an X-ray microscope and shows magnetic vortices being formed in ultrafast memory cells. Their work, which has been reported by the scientists surrounding Dr. Philipp Wessels of the University of Hamburg in the journal Physical Review B, provides a better understanding of the dynamics of magnetic storage materials. Magnetic memory cells are found in every computer hard drive.

27 November 2014 - Anopheles mosquitoes are responsible for transmitting human malaria parasites that cause an estimated 200 million cases and more than 600 thousand deaths each year. However, of the almost 500 different Anopheles species, only a few dozen can carry the parasite and only a handful of species are responsible for the vast majority of transmissions.

Off the coast of Schleswig-Holstein at the exit of Eckernförde Bay is a hidden treasure, but it is not one of chests full of silver and gold. It is a unique scientific record. Since 1957, environmental parameters such as oxygen concentrations, temperature, salinity and nutrients have been measured monthly at the Boknis Eck time series station. "It is one of the oldest active time series stations for this kind of data worldwide," explains the scientific coordinator Prof. Dr. Hermann Bange from GEOMAR Helmholtz Centre for Ocean Research Kiel.

WASHINGTON - In certain circumstances, women may be more effective than men when negotiating money matters, contrary to conventional wisdom that men drive a harder bargain in financial affairs, according to a new meta-analysis published by the American Psychological Association.

Knowledge of the three-dimensional structures of proteins is essential for understanding biological processes.

Structures help to explain molecular and biochemical functions, visualize details of macromolecular interactions, facilitate understanding of underlying biochemical mechanisms and define biological concepts.

Women with a mental illness (including depression, anxiety and serious mental illnesses) are less likely to be screened for breast cancer, according to new research published in the BJPsych (online first).

The research was led by Dr Alex J Mitchell, consultant psychiatrist in the Department of Cancer Studies, University of Leicester.

It is said to represent a "cosmic constant" found in the curvature of elephant tusks, the shape of a kudu's horn, the destructive beauty of Hurricane Katrina, and in the astronomical grandeur of how planets, moons, asteroids and rings are distributed in the solar system, to name but a few.

Now, researchers from the Universities of the Witwatersrand and Pretoria are also suggesting that the "Golden Ratio" - designated by the Greek symbol ∅ (letter Phi) with a mathematical value of about 1.618 - also relates to the topology of space-time, and to a biological species constant (T).

Thanks to the more than 11,200 sightings of cetaceans over the course of ten years, Spanish and Portuguese researchers have been able to identify, in detail, the presence of orcas in the Gulf of Cadiz, the Strait of Gibraltar and the Alboran Sea. According to the models that have been generated, the occurrence of these cetaceans is linked to the distribution of their main prey (red tuna) and their presence in Spanish, Portuguese and Moroccan waters is thus more limited than previously thought.

The negative impact of contractions during in vitro fertilisation is a well-known fact. What was unknown until now was the effect it had on artificial insemination. A new study has discovered that it is the contrary to that seen in embryo transfer: there is an improved chance of getting pregnant.

Researchers from the Valencian Infertility Institute (IVI) have demonstrated that the number of contractions of the uterus per minute is a parameter associated with success in artificial insemination procedures.

In a new register study in the scientific journal BMJ, researchers at Karolinska Institutet are able to dismiss previous claims that there is a link between the increased use of antibiotics in society and a coinciding rise in childhood asthma. The study includes half a million children and shows that exposure to antibiotics during pregnancy or early in life does not appear to increase the risk of asthma.

CHICAGO - Researchers are using computed tomography (CT) and 3-D printing technology to recreate life-size models of patients' heads to assist in face transplantation surgery, according to a study presented today at the annual meeting of the Radiological Society of North America (RSNA).

Physicians at Brigham and Women's Hospital in Boston performed the country's first full-face transplantation in 2011 and have subsequently completed four additional face transplants. The procedure is performed on patients who have lost some or all of their face as a result of injury or disease.