Male mice appear to be precisely wired to know when they are intruders in another male's territory, according to a study published June 23 in Cell Reports. The smell gives it away. But this study found that a genetically specific cluster of hypothalamic cells is wired to the olfactory system and responds only when a male mouse enters another male's cage.

"There seems to be a specific part of the brain that says, yeah, this is someone's house, and you need to act accordingly," says lead investigator Larry Zweifel, assistant professor of pharmacology at the University of Washington.

BUFFALO, N.Y. - For young people entering adulthood, high-quality relationships are associated with better physical and mental health, according to the results of a recently published study by a University at Buffalo-led research team.

"Health benefits begin to accrue relatively quickly with high-quality relationships and supportive contexts," says Ashley Barr, assistant professor in UB's Department of Sociology in the College of Arts and Sciences. "And then we see detrimental effects from low-quality relationships - particularly, those low-quality relationships that last a long time."

The use of medical marijuana for millions of patients suffering from a wide range of health conditions and the subsequent therapeutic benefits has long been documented. Twenty-three states, the District of Columbia, Puerto Rico, and Guam, have determined that Cannabis sativa (a.k.a. marijuana) can benefit patients suffering from a wide range of conditions, including cancer, epilepsy, chronic pain, and post-traumatic stress disorder.

So given all the health benefits for people experiencing debilitating health issues, why does the federal government continue to stifle valid, externally valid scientific research on Cannabis sativa?

A team of researchers at Scripps Institution of Oceanography at the University of California San Diego compared sand levels on several San Diego beaches during the last seven winters. The El Niños of winter 2009-10 and 2015-16 were the two most erosive. Three San Diego County beaches that received imported sand in 2012 were about 10 meters (33 feet) wider, and one to two meters (three to six feet) higher in 2015-16 than in 2009-10, with the coarseness of the sand apparently aiding the effectiveness of the effort.

In contrast, Torrey Pines State Beach, which had received no recent sand infusions, had slightly more erosion than in 2009-10.

MAYWOOD, IL - New devices called stent retrievers, which effectively reverse strokes, have revolutionized the treatment of certain stroke patients, according to an article in the journal Expert Review of Neurotherapeutics.

"Stent retrievers are a major advance in acute ischemic stroke care and will have significant impact on the evolution of stroke systems of care," according to the article by Loyola Medicine neurologists Rick Gill, MD and Michael J. Schneck, MD. Dr. Gill is the outgoing chief resident and Dr. Schneck is a professor in the Department of Neurology of Loyola University Chicago Stritch School of Medicine.

It is important to diagnose the faults of rolling bearings, because they may lead to the failure of motors, and even entire system-wide problems and failures. In order to diagnose the early faults of bearings, a novel method for early diagnosis of rolling bearing faults based on resonance-based sparse signal decomposition and principal component analysis is proposed in the present paper.