Children’s viewing of violent TV shows, their identification with aggressive same-sex TV characters, and their perceptions that TV violence is realistic are all linked to later aggression as young adults, for both males and females. That is the conclusion of a 15-year longitudinal study of 329 youth published in the March issue of Developmental Psychology, a journal of the American Psychological Association (APA). These findings hold true for any child from any family, regardless of the child’s init

Viral enzyme ’clear cuts’ forest of protective molecules on lung cells in mice; blocking that enzyme reduces illness and incidence of death from subsequent infection by Streptococcus pneumoniae

Investigators at St. Jude Children’s Research Hospital have shown in mice how the potentially deadly cooperation between influenza virus and bacterial pneumonia infections can be foiled, even if treatment is delayed and flu virus levels in the lung have peaked.

The St.

A Lawrence Livermore National Laboratory astrophysicist, working with an international group of researchers, has discovered that high-energy neutrinos — particles that rarely interact with other matter — are produced in the accretion discs of neutron stars in amounts significant enough to be detected by the next-generation of neutrino telescopes.

Using computer simulations, the team of scientists, which includes Lab astrophysicist Diego Torres, has shown that magnetized, accreting neutron

Studying mice, scientists from Johns Hopkins have successfully prevented a molecular event in brain cells that they’ve found is required for storing spatial memories. Unlike regular mice, the engineered rodents quickly forgot where to find a resting place in a pool of water, the researchers report in the March 7 issue of the journal Cell.

The experiments are believed to be the first to prove that subtly altering the chemistry of a certain protein can profoundly affect a brain cell&#146

Connections seen to X-linked mental retardation and some forms of leukemia

Most of the time, most of the estimated 35,000 genes in the human genome are silent, securely stored away in the tightly coiled structure of chromatin, which makes up chromosomes. Inside chromatin, the DNA is wound around small proteins called histones, making it unavailable to the cellular machinery that would otherwise read its coded genetic information. Specific cell and tissue types are characterized by the

New findings from Queen’s researchers will help experts better predict future drought patterns and water availability in the prairies.

An international research team including biologists Kathleen Laird and Brian Cumming from the Queen’s Paleoecological Environmental Assessment and Research Laboratory (PEARL), and Peter Leavitt from the University of Regina, investigated records of drought over the past 2000 years from lake sediments in the northern Canadian prairie region (Manitoba