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Global agriculture: More land, fewer harvests

Global agriculture: More land, fewer harvests
2014-09-18
According to a simulation of the impact of climate change on agricultural production over the course of the 21st century, carried out by researchers led by Professor Wolfram Mauser at LMU's Department of Geography, some two-thirds of all land potentially suitable for agricultural use is already under cultivation. The study indicates that climate change will expand the supply of cropland in the high latitudes of the Northern hemisphere (Canada, Russia, China) over the next 100 years. However, in the absence of adaptation measures such as increased irrigation, the simulation ...

Withdrawal from the evolutionary race

2014-09-18
This news release is available in German. In ecology, disease tolerance is defined as a host strategy not to fight a pathogen tooth and nail, but rather tolerate it to live (and survive) better in the long term. One key feature of tolerance is that the disease only progresses very slowly – if at all – even if the host carries a high pathogen load. Roland Regoes, a senior scientist at ETH Zurich's Institute of Theoretical Biology, has now transferred this approach to HIV. He set about investigating whether there are infected people who are more tolerant of the HI virus ...

Decision-support program helps keep seniors out of the emergency room

Decision-support program helps keep seniors out of the emergency room
2014-09-18
New Rochelle, NY, September 18, 2014–An Emergency Room Decision-Support (ERDS) program can significantly reduce ER visits and hospital admissions among older adults on Medicare. This could have important economic implications, helping to reduce the nearly 33% of avoidable ER visits that contribute to about $18 billion in unnecessary healthcare costs each year. Details of a successful ERDS program that had a positive return on investment are published in an article in Population Health Management, a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. The article ...

Language evolution: Quicker on the uptake

2014-09-18
The ability to acquire and creatively manipulate spoken language is unique to humans. "The genetic changes that occurred over the past 6 million years of human evolution to make this possible are largely unknown, but Foxp2 is the best candidate gene we now have," says Wolfgang Enard, Professor of Anthropology and Human Biology at LMU. In his efforts to understand the molecular biological basis of language Enard has now taken an important step forward. The results of his latest study, undertaken in collaboration with scientists at several universities, including the Massachusetts ...

First eyewitness accounts of mystery volcanic eruption

2014-09-18
This eruption occurred just before the 1815 Tambora volcanic eruption which is famous for its impact on climate worldwide, with 1816 given memorable names such as 'Eighteen-Hundred-and-Froze-to-Death', the 'Year of the Beggar' and the 'Year Without a Summer' because of unseasonal frosts, crop failure and famine across Europe and North America. The extraordinary conditions are considered to have inspired literary works such as Byron's 'Darkness' and Mary Shelley's Frankenstein. However, the global deterioration of the 1810s into the coldest decade in the last 500 years ...

Lunar explorers will walk at higher speeds than thought

2014-09-18
Anyone who has seen the movies of Neil Armstrong's first bounding steps on the moon couldn't fail to be intrigued by his unusual walking style. But, contrary to popular belief, the astronaut's peculiar walk was not the result of low gravity. Wyle Science, Engineering and Technology scientist John De Witt explains that the early space suits were not designed for walking, so the astronauts adapted their movements to the restrictions of the suit. Michael Gernhardt, the head of NASA's Extravehicular Activity Physiology, Systems and Performance Project, wants to learn more about ...

Wild berry extract may strengthen effectiveness of pancreatic cancer drug

Wild berry extract may strengthen effectiveness of pancreatic cancer drug
2014-09-18
A wild berry native to North America may strengthen the effectiveness of a chemotherapy drug commonly used to treat pancreatic cancer, reveals research published online in the Journal of Clinical Pathology. The study by researchers at King's College Hospital and the University of Southampton suggests that adding nutraceuticals to chemotherapy cycles may improve the effectiveness of conventional drugs, particularly in hard to treat cancers, such as pancreatic cancer. The team tested the effectiveness of extract of chokeberry (Aronia melanocarpa) in killing off cancer ...

Violence rates can be halved in just 30 years, say leading experts

2014-09-18
New evidence will be presented at the first Global Violence Reduction Conference in Cambridge this week which shows that homicide rates have been declining since the mid-1990s in many parts of the world - in some cases dramatically. Nations as diverse as Estonia, Hong Kong, South Africa, Poland, and Russia have seen average recorded homicide rates drop by 40% or more in the course of just 15 years. Out of 88 countries where trend data could be found, 67 showed a decline and only 20 showed an increase between 1995 and 2010, a new analysis of data from the United Nations ...

The Lancet Haematology: PET-CT predicts lymphoma survival better than conventional imaging

2014-09-18
Positron emission tomography/computed tomography (PET-CT) is more accurate than conventional CT scanning in measuring response to treatment and predicting survival in patients with follicular lymphoma, and should be used routinely in clinical practice, according to new research published in The Lancet Haematology. "Our findings have important implications for patients with follicular lymphoma, a common and usually slow-growing lymphoma. Compared to conventional CT scanning, PET-CT is more accurate in mapping-out the lymphoma, and better identifies the majority of patients ...

Peacock's train is not such a drag

2014-09-18
The magnificent plumage of the peacock may not be quite the sacrifice to love that it appears to be, University of Leeds researchers have discovered. Dr Graham Askew, from the University's School of Biomedical Sciences, filmed five Indian peacocks taking off using two high-speed video cameras to try to work out what price male birds pay for carrying the spectacular iridescent feathers they use in displays to attract females. "These feathers weigh about 300g and can exceed 1.5m, so it's expected that the male birds would be making a significant sacrifice in their flight ...

'Office life' of bacteria may be their weak spot

2014-09-18
Scientists at the University of Leeds think we may be able to drown deadly bacteria in their own paperwork. A research team in the University's Astbury Centre for Structural Molecular Biology has identified for the first time how the "paper shredder" that keeps the bacteria E. coli on top of its day job works. Now the group are looking for ways to jam the mechanism and leave E. coli and similar bacteria in filing hell. Dr Kenneth McDowall, Associate Professor in Molecular Microbiology, who led the research, said: "If we block the 'shredder' using genetics in the ...

Space: The final frontier ... open to the public

2014-09-18
Historically, spaceflight has been reserved for the very healthy. Astronauts are selected for their ability to meet the highest physical and psychological standards to prepare them for any unknown challenges. However, with the advent of commercial spaceflight, average people can now fly for enjoyment. The aerospace medicine community has had very little information about what medical conditions or diseases should be considered particularly risky in the spaceflight environment, as most medical conditions have never been studied for risk in space — until now. The aerospace ...

Nile River monitoring influences northeast Africa's future

2014-09-18
Curtin University research that monitors the volume of water in the Nile River Basin will help to level the playing field for more than 200 million North-East Africans who rely on the river's water supply. Despite being arguably the longest river in the world, winding through nine different countries, the Nile River is shallow and has a low volume, making its water precious, particularly to those countries located downstream. Curtin Associate Professor Joseph Awange, Department of Spatial Sciences, has been monitoring extractions or additions of water to the Nile River, ...

Kids eat better if their parents went to college

2014-09-18
Children of college-educated parents eat more vegetables and drink less sugar, according to a new study from the University of British Columbia. But it's still not enough, the study goes on to say, as all kids are falling short when it comes to eating healthier at school The research suggests a parent's educational attainment, an indicator of socioeconomic status, may inform a child's diet. The study found Vancouver school children whose parents completed some post-secondary education were 85 per cent more likely to eat vegetables during the school week than those with ...

Dogs can be pessimists too

Dogs can be pessimists too
2014-09-18
Dogs generally seem to be cheerful, happy-go-lucky characters, so you might expect that most would have an optimistic outlook on life. In fact some dogs are distinctly more pessimistic than others, research from the University of Sydney shows. "This research is exciting because it measures positive and negative emotional states in dogs objectively and non-invasively. It offers researchers and dog owners an insight into the outlook of dogs and how that changes," said Dr Melissa Starling, from the Faculty of Veterinary Science. Her PhD research findings are published ...

The viability of premature babies is minimal at 22 weeks' gestation

2014-09-18
A new study analyses the survival rates in Spain of newborns with a gestational age under 26 weeks. The results show that survival under 23 weeks is 'exceptional', although other factors such as birth weight and sex also have an influence. Experts from the Spanish Society of Neonatology have studied the survival rates in Spain of newborns with a gestational age under 26 weeks, taking into account that a newborn carried to term is between 37 and 42 weeks. The data have been drawn from the national database that gathers information on all babies born weighing less than ...

A second look at glaucoma surgery

2014-09-18
New research led by Queen's University professor Robert Campbell (Ophthalmology) has revealed using anti-inflammatory medications after glaucoma laser surgery is not helpful or necessary. Glaucoma is the most common cause of irreversible blindness in the world and about 400,000 Canadians are afflicted with the disease, which is mainly caused by pressure within the eye being high enough to damage the optic nerve. The optic nerve is responsible for sending messages from the eye to the brain and is a vital part of vision. "The use of strong anti-inflammatory therapies after ...

Tropical fish a threat to Mediterranean Sea ecosystems

Tropical fish a threat to Mediterranean Sea ecosystems
2014-09-18
The tropical rabbitfish which have devastated algal forests in the eastern Mediterranean Sea pose a major threat to the entire Mediterranean basin if their distribution continues to expand as the climate warms, a new study warns. The study, by an international team of researchers led by Dr Adriana Vergés of UNSW Australia and Dr Fiona Tomas of the Mediterranean Institute for Advanced Studies in Spain, is published in the Journal of Ecology. Members of the team surveyed more than 1000 kilometres of coastline in Turkey and Greece, where two species of rabbitfish have become ...

University of Kentucky research explores STXBP5 gene and its role in blood clotting

2014-09-18
LEXINGTON, Ky (Sept. 17, 2014) -- Two independent groups of researchers led by Sidney (Wally) Whiteheart, PhD, of the University of Kentucky, and Charles Lowenstein, MD, of the University of Rochester, have published important studies exploring the role that a gene called STXBP5 plays in the development of cardiovascular disease. According to Whiteheart, previous genome-wide association studies (GWAS) identified a gene called STXBP5 as a factor that regulates a protein called Von Willebrand factor (VWF). VWF is an important contributor to normal blood clotting. When ...

UT Dallas study uncovers factors in students' reporting of weapons at school

UT Dallas study uncovers factors in students reporting of weapons at school
2014-09-18
As a result of outbreaks of violence in the nation's schools, concerns have grown about school safety and the overall well-being of students. In a new study, UT Dallas criminology researchers have found that certain factors affect students' willingness to report weapons at school. "A big part of adolescent development is figuring out your identity, and that does not always mean talking to grown-ups about what is going on," said Dr. Nadine Connell, assistant professor of criminology in the School of Economic, Political and Policy Sciences. "We can't stop students from ...

Improving medicines for children in Canada

2014-09-18
Ottawa (September 18, 2014) – A new expert panel report, Improving Medicines for Children in Canada, released today by the Council of Canadian Academies, addresses the importance of developing safe and effective medicines for children. Each year about half of Canada's seven million children use at least one prescription drug. Much of this prescribing is done off-label (i.e. the prescription differs from the authorized use), creating potential health risks. Children have historically been excluded in drug research and development, including clinical trials. As a result, ...

Rosuvastatin treatments particularly effective among prediabetic patients

2014-09-18
Los Angeles, CA (September 18, 2014) Cardiovascular disease is the leading causes of death worldwide and high cholesterol plays a major role in accelerating its progression. Medical practitioners have turned to statins as a treatment to decrease cholesterol-carrying lipoproteins such as small dense lipoproteins (sdLDL), considered to be especially harmful. A new study, out today in the Journal of Cardiovascular Pharmacology and Therapeutics finds that rosuvastatin may be more effective among prediabetic patients than patients with normal glucose levels. Study author ...

Middle school dilemma: Girls' body image affected by older peers

2014-09-18
Los Angeles, CA (September 18, 2014) The media is highly criticized for contributing to body image issues in adolescents. However, a study out today in Psychology of Women Quarterly finds a different source for body dissatisfaction among young girls: older girls at school. A research team led by Jaine Strauss, Professor of Psychology at Macalester College, surveyed 1,536 5th through 8th-grade female students attending schools with different grade groupings. Some 5th and 6th graders attended school with older students (i.e. in districts that follow the "middle school" ...

How stress tears us apart

How stress tears us apart
2014-09-18
Why is it that when people are too stressed they are often grouchy, grumpy, nasty, distracted or forgetful? Researchers from the Brain Mind Institute (BMI) at EPFL have just highlighted a fundamental synaptic mechanism that explains the relationship between chronic stress and the loss of social skills and cognitive impairment. When triggered by stress, an enzyme attacks a synaptic regulatory molecule in the brain. This was revealed by a work published in Nature Communications. Carmen Sandi's team went to look for answers in a region of the hippocampus known for its involvement ...

Scientists pioneer microscopy technique that yields fresh data on muscular dystrophy

Scientists pioneer microscopy technique that yields fresh data on muscular dystrophy
2014-09-18
Scientists at USC have developed a new microscopy technology that allows them to view single molecules in living animals at higher-than-ever resolution. Dubbed "Complementation Activated Light Microscopy" (CALM), the new technology allows imaging resolutions that are an order of magnitude finer than conventional optical microscopy, providing new insights into the behavior of biomolecules at the nanometer scale. In a paper published on Sept. 18 by Nature Communications, the researchers behind CALM used it to study dystrophin – a key structural protein of muscle cells ...
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