ANN ARBOR, Mich.— The jokes by late-night comedy television hosts can be just as effective as regular political news in spurring discussion among viewers, a new University of Michigan study shows.
In addition, political candidates could help their campaigns with mentions by shows like “The Daily Show with Jon Stewart,” “Late Show with David Letterman” or “The Tonight Show with Jay Leno.” (more…)
Scientists have found the answer to why female killer whales have the longest menopause of any non-human species – to care for their adult sons.
Led by the Universities of Exeter and York and published in the journal Science the research shows that, for a male over 30, the death of his mother means an almost 14-fold-increase in the likelihood of his death within the following year.
The reason for the menopause remains one of nature’s great mysteries and very few species have a prolonged period of their lifespan when they no longer reproduce, as in humans. However, female killer whales stop reproducing in their 30s-40s, but can survive into their 90s. While different theories have been put forward for the evolution of menopause in humans, including the well-established ‘grandmother’ hypothesis, there has been no definitive answer to why females of a small number of other species, including killer whales, also stop reproducing part-way through their lives. (more…)
UD faculty member teaches sociology and statistics with technology
Victor Perez, an assistant professor in the University of Delaware’s Department of Sociology and Criminal Justice, has found multiple ways to reach students using diverse technological approaches. Perez makes his classroom presentations highly interactive by combining a tablet with an engaging PowerPoint presentation.
Using the Wacom Bamboo tablet and its accompanying app, Perez creates illustrations of statistical formulas and distributions in class. “Bamboo Dock is something that I’ll use pretty frequently in the statistics course, and it looks literally like a journal. What’s great about this is that you can write any statistical formula, and it’s what students will see directly on the screen,” Perez said. (more…)
A new University of Colorado Boulder-led study that ties forest “greenness” in the western United States to fluctuating year-to-year snowpack indicates mid-elevation mountain ecosystems are most sensitive to rising temperatures and changes in precipitation and snowmelt.
Led by CU-Boulder researcher Ernesto Trujillo and Assistant Professor Noah Molotch, the study team used the data — including satellite images and ground measurements — to identify the threshold where mid-level forests sustained primarily by moisture change to higher-elevation forests sustained primarily by sunlight and temperature. Being able to identify this “tipping point” is important because it is in the mid-level forests — at altitudes from roughly 6,500 to 8,000 feet — where many people live and play in the West and which are associated with increasing wildfires, beetle outbreaks and increased tree mortality, said Molotch. (more…)
COLLEGE PARK, Md. – Moderate exercise may help people cope with anxiety and stress for an extended period of time post-workout, according to a study by kinesiology researchers in the University of Maryland School of Public Health published in the journal Medicine and Science in Sports and Exercise.
“While it is well-known that exercise improves mood, among other benefits, not as much is known about the potency of exercise’s impact on emotional state and whether these positive effects endure when we’re faced with everyday stressors once we leave the gym,” explains J. Carson Smith, assistant professor in the Department of Kinesiology. “We found that exercise helps to buffer the effects of emotional exposure. If you exercise, you’ll not only reduce your anxiety, but you’ll be better able to maintain that reduced anxiety when confronted with emotional events.” (more…)
Hospitals that continue CPR longer have better survival rates from cardiac arrests, according to a study published online Sept. 5 in The Lancet. The findings challenge the assumption that, if a pulse is not restored soon, continuing resuscitation efforts is futile.
The results also showed that patients who recovered after an extended CPR effort were no more likely to suffer brain damage than are patients revived after a shorter effort. (more…)
UD-Stanford team calculates maximum global energy potential from wind
Wind turbines could power half the world’s future energy demands with minimal environmental impact, according to new research published by University of Delaware and Stanford University scientists in the Proceedings of the National Academy of Sciences.
The researchers arrived at the determination by calculating the maximum theoretical potential of wind power worldwide, taking into account the effects that numerous wind turbines would have on surface temperatures, water vapor, atmospheric circulations and other climatic considerations.
“Wind power is very safe from the climate point of view,” said Cristina Archer, associate professor of geography and physical ocean science and engineering at UD. (more…)
Research finds infants classify faces by gender, race
Long before babies can talk — even before they can sit up on their own — they are mentally forming categories for objects and animals in a way that, for example, sets apart squares from triangles and cats from dogs, psychologists say.
Now, research conducted by the University of Delaware’s Paul Quinn, professor of psychology, and others indicates that babies as young as 3 months are also classifying faces by race and gender, showing a visual preference for the category they see most often in their daily lives, and that by 9 months they have difficulty recognizing the faces of people from less-familiar races. (more…)
