CHICAGO—The "big issues" in climate change science have shifted over the past 4 to 6 years, with several difficult problems resolved while new research challenges rose to the fore. Scientists who are leading advisors on climate change to federal and international policymakers will examine the state-of-the-science in "Research Challenges in Climate Change: What's New and Where are We Going?" on Feb. 14 at the American Association for the Advancement of Science (AAAS) Annual Meeting in Chicago. "The session will be very forward looking. What we would like to do better ...

University of Adelaide research has shown for the first time that grape seed can aid the effectiveness of chemotherapy in killing colon cancer cells as well as reducing the chemotherapy's side effects. Published in the prestigious journal PLOS ONE, the researchers say that combining grape seed extracts with chemotherapy has potential as a new approach for bowel cancer treatment – to both reduce intestinal damage commonly caused by cancer chemotherapy and to enhance its effect. Lead author Dr Amy Cheah says there is a growing body of evidence about the antioxidant health ...

Northwestern University's Sanjay Mehrotra has developed an innovative model that could help ease kidney distribution inequities among regions in the U.S. and ultimately help save hundreds of lives. His mathematical model, which takes into account a number of different factors, simulates and optimizes donor kidney distribution. Mehrotra will discuss his research in a presentation titled "Addressing Allocation Inefficiencies and Geographic Disparities" at the American Association for the Advancement of Science (AAAS) annual meeting in Chicago. His presentation is part of ...

High quality early childhood education for disadvantaged children can simultaneously reduce inequality and boost productivity in America, contends James Heckman, a professor of economics at the University of Chicago and one of the nation's leading experts on early childhood education. "With the global rise in income inequality, children born into disadvantaged environments are at much greater risk of being unskilled and facing many obstacles in life - which is bad for individuals and bad for societies," said Heckman, who delivered a talk "Giving Kids a Fair Chance Early ...

In a review article published Feb. 14 in The Lancet Oncology, Johns Hopkins experts identify three major sources of high cancer costs and argue that cancer doctors can likely reduce them without harm to patients. The cost-cutting proposals call for changes in routine clinical practice involved in end-of-life care, medical imaging and drug pricing. "We need to find the best ways to manage costs effectively while maintaining the same, if not better, quality of life among our patients," says Thomas Smith, M.D., The Harry J. Duffey Family Professor of Palliative Medicine ...

Researchers at the University of Guelph examined the energy use and greenhouse gas (GHG) emissions associated with corn production in Ontario. Their findings are published today in the Agricultural Institute of Canada's (AIC) Canadian Journal of Soil Science. The study reports estimated county-level energy and GHG intensity of grain corn, stover and cob production in Ontario from 2006-2011. According to the paper's authors, most of the energy used during corn production comes from the use of natural gas and electricity during grain drying; the production and application ...

A large-scale survey of South African healthcare workers has revealed major gaps in workplace protection against tuberculosis, HIV and hepatitis, according to a University of British Columbia health researcher. Presenting findings today at the 2014 annual meeting of the American Association for the Advancement of Science (AAAS), Dr. Annalee Yassi says issues such as confidentiality, stigma, technological capacity and staff training need to be addressed while improving hospital resources and protocols. Preliminary results of the 2012 baseline survey ...

While most Americans could be a bit more knowledgeable in the ways of science, a majority are interested in hearing about the latest scientific breakthroughs and think highly of scientists. This is according to a survey of more than 2,200 people conducted by the National Science Foundation, one that is conducted every two years and is part of a report – Science and Engineering Indicators – that the National Science Board provides to the president and Congress. A Michigan State University faculty member served as lead author for the chapter in the report that covers ...

Women who drink alcohol at moderate or heavy levels in the early stages of their pregnancy might damage the growth and function of their placenta – the organ responsible for supplying everything that a developing infant needs until birth - research at The University of Manchester shows. Placentas studied in a laboratory environment showed that drinking alcohol at moderate (2/3 standard drinks) to high (4-6 standard drinks) rates reduced the cell growth in a woman's placenta. The research, published in the journal PLoS One and funded by the British Medical Association, ...

Children exposed to cigarette smoke at home have lower levels of an enzyme that helps them respond to asthma treatment, a study has found. Passive smoking is known to worsen asthma symptoms in children and impair their response to inhaled steroid treatment, but how this effect occurs was not known. Researchers at Imperial College London found that children with severe asthma with a parent who smokes at home have lower levels of the enzyme HDAC2 compared with those whose parents don't smoke. HDAC2 is required for steroids to exert their beneficial anti-inflammatory effects ...

A new breed of ultra thin super-material has the potential to cause a technological revolution. "Artificial graphene" should lead to faster, smaller and lighter electronic and optical devices of all kinds, including higher performance photovoltaic cells, lasers or LED lighting. For the first time, scientists are able to produce and have analysed artificial graphene from traditional semiconductor materials. Such is the scientific importance of this breakthrough these findings were published recently in one of the world's leading physics journals, Physical Review X. A researcher ...

PHILADELPHIA – Heavy drinking is common in the United States and takes a personal and societal toll, with an annual estimated cost of $223.5 billion due to losses in workplace productivity, health care and criminal justice expenses. Data shows that 23 percent of individuals age 12 or older reported drinking five or more drinks on one occasion in the previous month, and almost seven percent reported doing so on at least five days per month. Despite this, few heavy drinkers seek out treatment—especially those who do not meet the clinical criteria for an alcohol use disorder, ...

On a pound-per-pound basis, carbon nanotube-based fibers invented at Rice University have greater capacity to carry electrical current than copper cables of the same mass, according to new research. While individual nanotubes are capable of transmitting nearly 1,000 times more current than copper, the same tubes coalesced into a fiber using other technologies fail long before reaching that capacity. But a series of tests at Rice showed the wet-spun carbon nanotube fiber still handily beat copper, carrying up to four times as much current as a copper wire of the same ...

A research team investigating tinnitus, from the University of Leicester, has revealed new insights into the link between the exposure to loud sounds and hearing loss. Their study, published this week in Neuroscience, helps to understand how damage to myelin – a protection sheet around cells - alters the transmission of auditory signals occurring during hearing loss. The three-year study was derived from a PhD studentship funded by Action on Hearing Loss. It was led by Dr Martine Hamann, Lecturer in Neurosciences at the University's Department of Cell Physiology and ...

The world's biggest study offering healthy eating and exercise advice to pregnant women who are overweight or obese has shown a significant reduction in the number of babies born over 4kg (8.8 pounds) in weight. The LIMIT Study, led by researchers from the University of Adelaide's Robinson Institute and the Women's and Children's Hospital, involved more than 2200 pregnant women from 2008-2011. In the first major results from the LIMIT Study, published this week in the British Medical Journal, the researchers say that providing advice and assistance to adopt a healthy ...

Americans don't like to talk about social class. But new research from Northwestern and Stanford universities suggests that, at least in college and university settings, they should do just that. An upcoming article in "Psychological Science" describes a novel one-hour intervention that closed by 63 percent the persistent academic achievement gap between first-generation college students and continuing-generation students. (Continuing-generation students are defined as those with at least one parent with a four-year college degree.) The key to the one-time intervention's ...

BOSTON – Dr. Raquell Holmes, an assistant research professor at Boston University's Center for Computational Science, will be a featured presenter at the 2014 annual meeting of the American Association for the Advancement of Science in Chicago, February 15, 2014. Dr. Holmes will participate in a panel session titled, "Improvisation for Scientists: Making a Human Connection" on February 16, 2014 at 9:15 am. Efforts to "communicate science" have been a rallying cry from governmental agencies, elected officials and citizens in need of accurate and accessible information ...

February 14, 2014 - Knowledge is power, yet new research suggests that a person's appearance alone can trump knowledge. First impressions are so powerful that they can override what we are told about people. A new study found that even when told whether a person was gay or straight, participants generally identified the person's sexual orientation based on how they looked – even if it contradicted the facts presented to them. "We judge books by their covers, and we can't help but do it," says Nicholas Rule of the University of Toronto. "With effort, we can overcome this ...

ATLANTA – February 14, 2014—While new and better treatments have improved the odds of survival for patients diagnosed late stage colorectal cancer, that progress has been largely confined to non-Hispanic whites and Asians and those under age 65, according to a new study. American Cancer Society researchers led by Helmneh Sineshaw, M.D., MPH, find there have been no significant increases in survival rates for Hispanics and non-Hispanic blacks with metastatic colon cancer. The study, appearing in the January issue of Cancer Causes and Control, concludes that the findings ...

Crabs -- those sometimes pesky, hard-shelled beachcombers -- are a highly diverse animal, with some 7,000 species found in oceans, lakes and on land, varying in size from the diminutive pea crab (millimeters) to the giant 4 meter-wide Japanese spider crab. Chu, et.al., have constructed the most complete and extensive dataset to date. Their recalibrated crab gene tree using DNA and mitochondrial sequences from 140 species and 58 crab families provides some new important insights into the timing and diversity of crab evolution. The research team's estimates confirm the ...

For the ancient ancestors of plants and animals, a partnership with other microbes was once formed during an endosymbiotic event to give rise to eukaryotes. Plants and animals, over billions of years of trial and error, made efficient use of different energy sources in the environment, namely carbon dioxide and oxygen. In the advanced online edition of Molecular Biology and Evolution, authors Maurino, et. al., explore the evolution of a family of enzymes, called 2-hydroxy acid oxidase, or 2-HAOX, that break down fats in both plant and animals. They wanted to test and ...

This news release is available in German. Spinach looks nothing like parsley, and basil bears no resemblance to thyme. Each plant has a typical leaf shape that can differ even within the same family. The information about what shape leaves will be is stored in the DNA. According to researchers at the Max Planck Institute for Plant Breeding Research in Cologne, the hairy bittercress (Cardamine hirsuta) has a particular gene to thank for its dissected leaves. This homeobox gene inhibits cell proliferation and growth between leaflets, allowing them to separate from each ...

How do our brains combine information from the external world (sensory stimulation) with information on our internal state such as hunger, fear or stress? NERF-scientists demonstrate that the habenula, a specific part in our brain consisting of neural circuits, acts as a gate for sensory information, thus regulating behavior in response to external stimuli. Emre Yaksi (NERF – VIB/imec/KU Leuven): "Our brain has high levels of spontaneous activity, even in the absence of sensory stimulation. We think that this spontaneous neural activity in combination with sensory stimulation ...

In recent years, the 1.5 kilos of bacteria that live inside our bodies, mainly in the gut, have proven their crucial importance for our healthy functioning. Beyond their more obvious role in digestion, they are also involved, for example, in the development of the immune system and the neuronal system, and in the onset of certain diseases. Three leading European researchers on the gut microbiome will share their recent findings on the relations between gut flora and obesity, diabetes, and cardio-metabolic diseases in general. Links Between Human Gut Microbiota and Metabolic ...

Understanding the region of interstellar space through which the solar system travels is no easy task. Interstellar space begins beyond the heliosphere, the bubble of charged particles surrounding the sun that reaches far beyond the outer planets. Voyager 1 has crossed into this space, but it's difficult to gain a complete global picture from measurements in only one direction. Spacecraft data in the past five years from near Earth and cosmic ray observations have painted a better picture of the magnetic system that surrounds us, while at the same time raising new questions. ...