Earth

FAYETTEVILLE, Ark. - Climate change is amplifying the intensity and likelihood of heatwaves during severe droughts in the southern plains and southwest United States, according to a new study by a University of Arkansas researcher.

A new class of 2D perovskite materials with edges that are conductive like metals and cores that are insulating was found by researchers who said these unique properties have applications in solar cells and nanoelectronics.

"This observation of the metal-like conductive states at the layer edges of these 2D perovskite materials provides a new way to improve the performance of next-generation optoelectronics and develop innovative nanoelectronics," said Kai Wang, assistant research professor in materials science and engineering at Penn State and lead author on the study.

In previous studies, males have been found to kill when females will not mate with them if they are still caring for an offspring sired by their previous partner. Dieter Lukas and Elise Huchard have now looked into infanticide by female mammals. "Across mammals, females are more likely to commit infanticide when conditions are harsh and when having offspring is particularly costly to females", says Huchard. "The potential triggers and likely benefits of infanticide however appear to differ according to the specific circumstances."

Infanticide can remove potential competitors

What The Study Did: This study of 1,600 older adults free of dementia at baseline examined whether accumulation over a lifetime of cognitive and social activities was associated with a slower rate of memory loss and a reduced risk of dementia, taking into account brain pathologies.

Authors: Xiuying Qi, Ph.D., and Weili Xu, M.D., Ph.D., of Tianjin Medical University, Tianjin, China, are the corresponding authors.

(doi:10.1001/jamaneurol.2019.2455)

Scientists have known insects experience something like pain since 2003, but new research published today from Associate Professor Greg Neely and colleagues at the University of Sydney proves for the first time that insects also experience chronic pain that lasts long after an initial injury has healed.

In recent years, the idea of life on other planets has become less far-fetched. NASA announced June 27 that it will send a vehicle to Saturn's icy moon, Titan, a celestial body known to harbor surface lakes of methane and an ice-covered ocean of water, boosting its chance for supporting life.

Gaku Kudo of Hokkaido University and Elisabeth J. Cooper of the Arctic University of Norway have demonstrated that early snowmelt results in the spring ephemeral Corydalis ambigua flowering ahead of the emergence of its pollinator, the bumblebee.

Scientists at Hokkaido University and Hiroshima University have found that green brittle stars with five arms show a different "pumping" movement pattern than those with six arms. Using a mathematical model, they have shown that such movements can be coordinated by the flow of internal body fluid alone, rather than neuronal activity. The study was published in Scientific Reports.

From high levels of lead found in school drinking water to industry sites releasing toxic heavy metals into the air, over 40 years of regulations in the United States have failed to protect human and environmental health from toxic chemicals.

In a new paper published in BioScience, Portland State University researchers contend that these failures result from the flawed governance over the continued production, use and disposal of toxic chemicals, and lay out a plan for improved policies.

Oxazolidinones are coveted in the field of medicine and pharmacology for their bioactive properties. There is hope that structurally different types of oxazolidinones can be building blocks for new drugs. With this research, Assistant Professor Yasunori Toda led a team of researchers at Shinshu University to use a neutral phosphonium salt catalyst for the oxazolidinone synthesis from glycidols and isocyanates.

A little self-doubt at work can be a good thing, but like anything else--too much can be a bad thing.

When employees, usually high performers, start to doubt their abilities too much it can turn into imposter phenomenon, causing fatigue, dissatisfaction, and the inability to maintain a healthy work-life balance. Employees experiencing imposter phenomenon have trouble recognizing and believing their own success and tend to overcompensate, which takes an emotional toll.

BUFFALO, N.Y. -- New research from the University at Buffalo provides pathophysiologic evidence of the effect of air pollution on cardiovascular disease in China. The findings also suggests that China may need to revise its standard for one type of pollutant.

Researchers found that long-term exposure to particulate matter and nitrogen dioxide, as well as proximity to vehicular traffic, were associated with severity of coronary artery calcium, or the buildup of plaque in the artery walls. The study was conducted on 8,867 Chinese adults aged 25 to 92.

Infrared imagery from NASA's Aqua satellite shows that Tropical Storm Barry doesn't look like a typical strong tropical cyclone. Imagery revealed that Barry is elongated and the strongest storms were south of it's stretched out center of circulation.

Warnings and Watches

CLEMSON, South Carolina - Researchers from Clemson University's Environmental Toxicology Program have published research connecting an enzyme associated with detoxification to obesity and fatty liver disease, especially in males.

A team of paleontologists led by Prof. Jingmai O'Connor from the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences, together with researchers from the Shandong Tianyu Museum of Nature, have discovered a new specimen of the volant dromaeosaurid Microraptor zhaoianus with the remains of a nearly complete lizard preserved in its stomach. Their findings were published in Current Biology.