The new study, published today in the journal Nature, examined the probability of keeping average global temperatures from rising more than 2°C above preindustrial levels under varying levels of climate policy stringency, and thus mitigation costs. In addition, the study for the first time quantified and ranked the uncertainties associated with efforts to mitigate climate change, including questions about the climate itself, uncertainties related to future technologies and energy demand, and political uncertainties as to when action will be taken. The climate system itself ...

VIDEO: This is Ettore Carretti talking about how the telescope makes maps of the sky. Click here for more information. "Monster" outflows of charged particles from the centre of our Galaxy, stretching more than halfway across the sky, have been detected and mapped with CSIRO's 64-m Parkes radio telescope. Corresponding to the "Fermi Bubbles" found in 2010, the outflows were detected by astronomers from Australia, the USA, Italy and The Netherlands. The finding is reported ...

A study by Johns Hopkins researchers has shown that a widely accepted model of long-term memory formation — that it hinges on a single enzyme in the brain — is flawed. The new study, published in the Jan. 2 issue of Nature, found that mice lacking the enzyme that purportedly builds memory were in fact still able to form long-term memories as well as normal mice could. "The prevailing theory is that when you learn something, you strengthen connections between your brain cells called synapses," explains Richard Huganir, Ph.D., a professor and director of the Johns Hopkins ...

Astronomers have used the ALMA telescope to get their first glimpse of a fascinating stage of star formation in which planets forming around a young star are helping the star itself continue to grow, resolving a longstanding mystery. The young system, about 450 light-years from Earth, is revealing its complex gravitational dance to the ever-sharpening vision of the Atacama Large Millimeter/submillimeter Array (ALMA), scheduled for completion this year. As young stars gather material from their surrounding clouds of gas and dust, the incoming material forms a flat, spinning ...

Enormous outflows of charged particles from the centre of our Galaxy, stretching more than halfway across the sky and moving at supersonic speeds, have been detected and mapped with CSIRO's 64-m Parkes radio telescope. Corresponding to the "Fermi Bubbles" found in 2010, the recent observations of the phenomenon were made by a team of astronomers from Australia, the USA, Italy and The Netherlands, with the findings reported in today's issue of Nature. "There is an incredible amount of energy in the outflows," said co-author Professor Lister-Staveley-Smith from The University ...

With policymakers and political leaders increasingly unable to combat global climate change, more scientists are considering the use of manual manipulation of the environment to slow warming's damage to the planet. But a University of Iowa law professor believes the legal ramifications of this kind of geo-engineering need to be thought through in advance and a global governance structure put in place soon to oversee these efforts. "Geo-engineering is a global concern that will have climate and weather impacts in all countries, and it is virtually inevitable that some ...

Even the best medicines in the world can be rendered ineffective if they are not taken as prescribed. The problem known as medication "non-adherence" is a major health issue in the United States, contributing to worse outcomes for people who have diabetes and other chronic diseases. Now a study led by researchers at the University of California, San Francisco (UCSF), San Francisco General Hospital and Trauma Center (SFGH) and the Kaiser Permanente Division of Research has identified a significant factor that contributes to poor drug adherence – ineffective communication. Described ...

January 2, 2013 -- Bisexual men are less likely to disclose and more likely to conceal their sexual orientation than gay men. In the first study to look at the mental health of this population, researchers at Columbia University's Mailman School of Public Health found that greater concealment of homosexual behavior was associated with more symptoms of depression and anxiety. The study published in the American Psychological Association's Journal of Consulting and Clinical Psychology, examined bisexual men "on the down low," a subgroup of bisexual men who live predominantly ...

In order to study the effectiveness or cost effectiveness of treatments for recurrent cancer, you first have to discover the patients in medical databases who have recurrent cancer. Generally studies do this with billing or treatment codes – certain codes should identify who does and does not have recurrent cancer. A recent study published in the journal Medical Care shows that the commonly used data determinants of recurrent cancer may be misidentifying patients and potentially leading researchers astray. "For example, a study might look in a database for all patients ...

Following a three-year study using more than 2,800 mice, a University of Missouri researcher was not able to replicate a series of previous studies by another research group investigating the controversial chemical BPA. The MU study is not claiming that BPA is safe, but that the previous series of studies are not reproducible. The MU study, published in the Proceedings of the National Academy of Sciences, also investigated an estrogenic compound found in plants, genistein, in the same three-year study. "Our findings don't say anything about the positive or negative effects ...

This press release is available in Spanish. U.S. Department of Agriculture (USDA) scientists are developing strategies to help livestock producers control stable flies, the most damaging arthropod pests of cattle in the United States. An economic impact assessment by scientists at the Agricultural Research Service (ARS) Agroecosystem Management Research Unit (AMRU) in Lincoln, Neb., looked at four sectors of cattle production: dairy, cow/calf, pastured and range stocker, and animals on feed. They found that stable flies cost the U.S. cattle industry more than $2.4 ...

A new ray of hope has broken through the clouded outcomes associated with Alzheimer's disease. A new research report published in January 2013 print issue of the FASEB Journal by scientists from the National Institutes of Health shows that when a molecule called TFP5 is injected into mice with disease that is the equivalent of human Alzheimer's, symptoms are reversed and memory is restored—without obvious toxic side effects. "We hope that clinical trial studies in AD patients should yield an extended and a better quality of life as observed in mice upon TFP5 treatment," ...

BOSTON – A small percentage of men in a prostate cancer study complained that their penis seemed shorter following treatment, with some saying that it interfered with intimate relationships and caused them to regret the type of treatment they chose. Complaints were more common in men treated with radical prostatectomy (surgical removal of the prostate) or male hormone-blocking drugs combined with radiation therapy, according to the study by researchers from Dana-Farber/Brigham and Women's Cancer Center (DF/BWCC). No men reported a perceived shortening of their penis following ...

In Ethiopia, where more than 1.2 million people are infected with HIV, disclosure of infection by patients is important in the fight against the disease. A new study led by a Brown sociology researcher investigates HIV-positive status disclosure rates among men and women in Africa's second most populous country. In the December 17 issue of AIDS Care, Ayalu Reda, a sociology graduate student, and colleagues from Jimma University in Ethiopia found that among a sample of 1,540 patients receiving antiretroviral treatment in eastern Ethiopia, a majority (66 percent) disclosed ...

Alexandria, VA – The Burgess Shale provides us with a rare glimpse into the softer side of paleontology. Most fossils are preserved hard parts – bones, teeth and shells – but one of the most famous fossil locales in the world, the Burgess Shale, reveals subtle soft body structures like gills and eyes delicately preserved between the layers of dark rock. For more than 100 years, the Burgess Shale has been giving us a unique perspective on what life was like in the Cambrian seas. This month, EARTH Magazine contributor Mary Caperton Morton reminds us that no matter how well ...

MAYWOOD, Il. - Millions of Americans read physician ratings on websites such as Healthgrades.com, but such ratings are based on scores from an average of only 2.4 patients, a Loyola University Medical Center study has found. The study of 500 randomly selected urologists found that 79.6 percent of physicians were rated by at least one of the 10 free physician-review websites researchers examined. Eighty-six percent of physicians had positive ratings, with 36 percent receiving highly positive ratings. Healthgrades had the most physician ratings. Results were published ...

Today, mothers of newborns find themselves confronting a common dilemma: Should they let their babies "cry it out" when they wake up at night? Or should they rush to comfort their crying little one? In fact, waking up in the middle of the night is the most common concern that parents of infants report to pediatricians. Now, a new study from Temple psychology professor Marsha Weinraub gives parents some scientific facts to help with that decision. The study, published in Developmental Psychology, supports the idea that a majority of infants are best left to self-soothe ...

Athens, Ga. – Why do girls get better grades in elementary school than boys—even when they perform worse on standardized tests? New research from the University of Georgia and Columbia University published in the current issue of Journal of Human Resources suggests that it's because of their classroom behavior, which may lead teachers to assign girls higher grades than their male counterparts. "The skill that matters the most in regards to how teachers graded their students is what we refer to as 'approaches toward learning,'" said Christopher Cornwell, head of economics ...

CAMBRIDGE, MA -- Almost all computer chips use two types of transistors: one called p-type, for positive, and one called n-type, for negative. Improving the performance of the chip as a whole requires parallel improvements in both types. At the IEEE's International Electron Devices Meeting (IEDM) in December, researchers from MIT's Microsystems Technology Laboratories (MTL) presented a p-type transistor with the highest "carrier mobility" yet measured. By that standard, the device is twice as fast as previous experimental p-type transistors and almost four times as fast ...

Tropical Storm Freda may no longer be a tropical storm, but as a low pressure area it is bringing rainfall and gusty winds to New Caledonia. Two NASA satellites captured two different looks at the storm. Wind shear has punched Freda down to tropical storm status on Jan. 1 and weakened it to a remnant low pressure area on Jan. 2. NASA's Aqua satellite showed strong thunderstorms were over New Caledonia early on Jan. 2, while NASA's Tropical Rainfall Measuring Mission (TRMM) satellite peered under the hood of Freda's clouds and measured some moderate to heavy rainfall the ...

BETHESDA, Md. (Jan. 2, 2012)—A new study led by North Carolina researchers has found that when it comes to weight- and fat loss, aerobic training is better than resistance training. The study is believed to the largest randomized trial to directly compare changes in body composition induced by comparable amounts of time spent doing aerobic and resistant training, or both in combination, among previously inactive overweight or obese non-diabetic adults. The study is entitled "Effects of aerobic and/or resistance training on body mass and fat mass in overweight or obese ...

There's a saying that goes, "as long as there are tests, there will be prayer in public schools." At one time, that likely reflected a fairly uniform view about school prayer: that despite what federal law said about the practice, religious Americans by and large approved of it. A new study, however, paints a more complicated picture of attitudes toward school prayer over the last four decades, finding sharp differences in school-prayer support between different generations and their religious denominations. Forthcoming in the journal Sociological Forum, the study ...

Demyelinating diseases, such as multiple sclerosis (MS), are frequently associated with the progressive loss of vision. The retinal nerve damage is thought to be caused by immune system-mediated inflammation; however, other demyelinating disorders, such as Pelizaeus-Merzbacher disease, do not involve the immune system, suggesting that there are other causes of retinal nerve damage. Deimination is a protein modification that is altered in patients with MS and PMD. In this issue of the Journal of Clinical Investigation, researchers led by Sanjoy Bhattacharya at the University ...

Bacterial imbalance contributes to intestinal inflammation and carcinogenesis Instability in the composition of gut bacterial communities (dysbiosis) has been linked to common human intestinal disorders, including inflammatory bowel disease and colorectal cancer; however, it is unclear if dysbiosis can instigate disease or if it is a consequence of the underlying disorder. In this issue of the Journal of Clinical Investigation, researchers led by Mathias Chamaillard at the University Lille Nord de France in Lille, France, examined intestinal inflammation and tumorigenesis ...

Instability in the composition of gut bacterial communities (dysbiosis) has been linked to common human intestinal disorders, including inflammatory bowel disease and colorectal cancer; however, it is unclear if dysbiosis can instigate disease or if it is a consequence of the underlying disorder. In this issue of the Journal of Clinical Investigation, researchers led by Mathias Chamaillard at the University Lille Nord de France in Lille, France, examined intestinal inflammation and tumorigenesis in a mouse model of dysbiosis. Dysbiosis enhanced intestinal inflammation and ...