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ants create the largest colonies of any ant, with some comprising 8 million individuals. To sustain themselves, they march across the forest carrying vast quantities of leaves, piece by piece, in great green convoys, back to the nest. The ants use the leaves as fertilizer to cultivate gardens sown with bacteria and Leucoagaricus gongylophorous, a fungus that produces fruiting bodies packed with nutrients for the ants to feast on.

could also provide a model for the more efficient production of renewable biofuels.

confirmed that 145 lignocellulases were actually present. “That’s pretty definitive proof that the fungus is the primary driver of biomass breakdown,

Now scientists have found a more noble purpose for the technique in a study that suggests deep-rooted biases about race and gender could be “unlearnt” during a short nap. The findings appear to confirm the idea that sleeping provides a unique window for accessing and altering fundamental beliefs – even prejudices that we don’t know we have.

Simply playing auditory cues while people slept partially undid racial and gender bias, the study found, and the effects were still evident at least a week later.

“These biases are well-learned,” said Hu. “They can operate efficiently even when we have the good intention to avoid such biases. Moreover, we are often not aware of their influences on our behaviour.”

That was the purpose of a recent oral history event at the Royal Society, involving four senior scientists who began their careers in the 1960s and 1970s. Rather than simply reminiscing, they were asked to recall their publishing experiences in scientific periodicals over the last fifty years. How have things changed since they published their first paper?

It became clear that the hierarchy of journals has changed over the last fifty years, and the pressure to publish in those considered to have the highest impact has increased considerably, partly a result of the increased volume of data being produced and the need for readers to filter relevant information from the copious amounts of less pertinent stuff available.

What have also changed are the technologies available to write a paper. Frith related the process she went through in writing her first paper: “I wrote my papers by long hand and then typed them myself.” Writing a biological paper before computers is one thing, but Ashmore remembered the problems of producing mathematical formulae in a typed manuscript, explaining that “you wrote the paper and probably took it along to somebody to be typed… And then it came back with spaces where you had to write in the equations.”

Carnegie Mellon Univ. neuroscientists have identified a new pathway by which several brain areas communicate within the brain's striatum.

the findings illustrate structural and functional connections that allow the brain to use reinforcement learning to make spatial decisions, such as the dorsolateral prefrontal (DLPFC), orbitofrontal cortex (OFC) and posterior parietal cortex (PPC).

Knowing how these specific pathways work together provides crucial insight into how learning occurs

an array of new discoveries in psychology and neuroscience has further demonstrated how our preexisting beliefs, far more than any new facts, can skew our thoughts and even color what we consider our most dispassionate and logical conclusions. This tendency toward so-called "motivated reasoning" helps explain why we find groups so polarized over matters where the evidence is so unequivocal: climate change, vaccines, "death panels," the birthplace and religion of the president (PDF), and much else. It would seem that expecting people to be convinced by the facts flies in the face of, you know, the facts.

The theory of motivated reasoning builds on a key insight of modern neuroscience (PDF): Reasoning is actually suffused with emotion (or what researchers often call "affect"). Not only are the two inseparable, but our positive or negative feelings about people, things, and ideas arise much more rapidly than our conscious thoughts, in a matter of milliseconds—fast enough to detect with an EEG device, but long before we're aware of it. That shouldn't be surprising: Evolution required us to react very quickly to stimuli in our environment. It's a "basic human survival skill," explains political scientist Arthur Lupia of the University of Michigan. We push threatening information away; we pull friendly information close. We apply fight-or-flight reflexes not only to predators, but to data itself.

reasoning comes later, works slower—and even then, it doesn't take place in an emotional vacuum. Rather, our quick-fire emotions can set us on a course of thinking that's highly biased, especially on topics we care a great deal about.

subjects — 780 New Haven residents who volunteered — helped make an untenured assistant professor named Stanley Milgram a national celebrity. Over the next five decades, his obedience experiments provided the inspiration for films, fiction, plays, documentaries, pop music, prime-time dramas, and reality television. Today, the Milgram experiments are considered among the most famous and most controversial experiments of all time. They are also often used in expert testimony in cases where situational obedience leads to crime

Perry’s evidence raises larger questions regarding a study that is still firmly entrenched in American scientific and popular culture: if Milgram lied once about his compromised neutrality, to what extent can we trust anything he said? And how could a blatant breach in objectivity in one of the most analyzed experiments in history go undetected for so long?

the debate has never addressed this question: to what extent can we trust his raw data in the first place? In her riveting new book, Behind the Shock Machine: The Untold Story of the Notorious Milgram Psychology Experiments, Australian psychologist Gina Perry tackles this very topic, taking nothing for granted

excessive reporting of positive results in papers that describe animal testing of potential therapies, just like the publishing bias seen in clinical research, according to a paper published today

We know publication bias happens a lot in clinical trials,” said Torgerson, “so I was surprised at myself for being surprised at the results, because of course, if it happens in human research, why wouldn’t it happen in animal research?”

his suspicions about publication bias by performing a statistical meta-analysis of thousands of reported animal tests for various neurological interventions—a total of 4,445 reported tests of 160 different drugs and other treatments for conditions that included Alzheimer’s disease, Parkinson’s disease, brain ischemia, and more.

researchers and journalists have scrambled to map the spread of H7N9 bird flu through China to identify its source and highlight at risk areas. Mapping is a common response to outbreaks, especially of new diseases, but some scientists believe it must become a more proactive part of disease control

efforts to plot the locations of infectious diseases still tend to be reactive rather than proactive.

only 4 percent of important infectious diseases have been comprehensively mapped at a global scale. The rest are plagued by patchy data.

a group of genetically identical mice lived in the same complex enclosure for 3 months, individuals that explored the environment more broadly grew more new neurons than less adventurous mice, according to a study

s a clear and quantitative demonstration that individual differences in behavior can be reflected in individual differences in brain plasticity

often tried to tackle the question of how individual differences in behavior and personality develop in terms of the interactions between genes and environment. “But there is next to nothing [known] about the neurobiological mechanisms underlying individuality

some strains of both viruses are just one mutation away from getting a better grip on the cells in our upper airways. If wild viruses accrue those mutations, they may find it far easier to spread from infected to uninfected people, increasing the risk of a pandemic.

“These viruses are rapidly evolving and our stockpiles of vaccine are largely based on outdated strains,” he said. “We hope that our discoveries will help us to stay ahead of the curve by ensuring that vaccines are stockpiled against strains that are closest to adapting to humans.”

rather than focusing on these previously identified mutations, the team took a new approach. They modeled the way HA interacts with different glycans, and identified four structural features that bestow the protein with a preference for human receptors over bird ones.

abnormal brain activity seen in patients with obsessive-compulsive disorder (OCD) is a likely cause of the condition, according to two papers published today (June 6) in Science. Both studies used optogenetic techniques, which allow specific brain cells to be turned on and off at the flick of a light switch, to link the abnormal brain activity to OCD behavior in mice.

relationship between [neural] circuit abnormalities and [OCD-like] behavior,

“so I’m very aware of how severe the illness is and how important it is for us to develop new and more effective treatments.” The problem is, she added, “we don’t have a very good understanding of the pathologic changes that lead to OCD.”

Although previous work had indirectly suggested that changing mitochondrial function affected lifespan, “this is the first clear demonstration [that it] extends mouse lifespan,” Miller added.

well known that mitochondria are linked to health. Some evidence suggests that inhibiting mitochondrial function can be harmful—as in the case of diabetes or obesity—but earlier data from nematodes and fruit flies also suggest a link to lifespan increase. The latest findings are a step toward untangling one of the current debates in the field—whether inhibiting mitochondrial function is detrimental or beneficial,

The average lifespan of BXD mice range from 1 year to almost 2.5 years. The researchers were able to link 3 genes to longevity variability, including mitochondrial ribosomal protein S5 (Mrps5), which encodes a protein integral to mitochondrial protein synthesis. They found that BXD strains with 50 percent less Mrps5 expression lived about 250 days longer than BXD mice with more robust Mrps5 expression.

It’s the first time anyone’s shown any epigenetic basis for partner preference,

Mohamed Kabbaj, a neuroscientist at Florida State University and an author of the paper, said that work in other species gave him clues that epigenetics could be important for social behavior. For instance, previous work suggests that modifications are involved in bonds between mothers and offspring in rats.

the researchers blocked vasopressin or oxytocin receptors in the animals, the TSA had no effect on pair bond formation, supporting the theory that oxytocin and vasopressin were mediating the effects of the epigenetic modification.

The ability to manipulate human reproduction was viewed in many circles as an attack on the traditional family and an odious attempt to assert human dominion over nature. Terms such as “designer babies” and “playing God” were commonly applied to IVF.

proposed the concept of a “three-parent” fertility procedure to treat mitochondrial disorders

prevent defective mtDNA from being passed from mother to child, scientists in the U.K. are planning to offer a “three-parent” fertility procedure.

any hypothesis, his idea needed to be tested. But measuring brain activity in a moving ant—the most direct way to determine cognitive processing during animal decision making—was not possible. So Garnier didn’t study ants; he studied robots. U

The robots then navigated the environment by sensing light intensity through two sensors on their “heads.”

, several groups have used autonomous robots that sense and react to their environments to “debunk the idea that you need higher cognitive processing to do what look like cognitive things,”

a painstaking yearslong effort to reproduce 100 studies published in three leading psychology journals has found that more than half of the findings did not hold up when retested. The analysis was done by research psychologists, many of whom volunteered their time to double-check what they considered important work. Their conclusions, reported Thursday in the journal Science, have confirmed the worst fears of scientists who have long worried that the field needed a strong correction.

The vetted studies were considered part of the core knowledge by which scientists understand the dynamics of personality, relationships, learning and memory. Therapists and educators rely on such findings to help guide decisions, and the fact that so many of the studies were called into question could sow doubt in the scientific underpinnings of their work.

The new analysis, called the Reproducibility Project, found no evidence of fraud or that any original study was definitively false. Rather, it concluded that the evidence for most published findings was not nearly as strong as originally claimed.

Paradigm shifts are the stuff of scientific revolutions. They change how we view the world, the sorts of questions that scientists consider worth asking, and even how we do science.

Many scientists suffer from a kind of split personality. We believe that this is the most exciting time to be working while yearning for the excitement of a revolution. What ambitious scientist would not want to be part of a paradigm shift? Not surprisingly, this yearning occasionally manifests itself in proclamations that a revolution is at hand.

Comparative studies of development have illuminated how genes operate, and evolve, and this places less emphasis on the gradual accumulation of small genetic changes emphasized by the modern synthesis. Work in ecology has emphasized the role organisms play in building their own environments, and studies of the fossil record raise questions about the role of competition.

Scientists have long labored to explain what appeared to be a slowdown in global warming that began at the start of this century as, at the same time, heat-trapping emissions of carbon dioxide were soaring. The slowdown, sometimes inaccurately described as a halt or hiatus, became a major talking point for people critical of climate science.

When adjustments are made to compensate for recently discovered problems in the way global temperatures were measured, the slowdown largely disappears, the National Oceanic and Atmospheric Administration declared in a scientific paper published Thursday. And when the particularly warm temperatures of 2013 and 2014 are averaged in, the slowdown goes away entirely, the agency said.

“The notion that there was a slowdown in global warming, or a hiatus, was based on the best information we had available at the time,” said Thomas R. Karl, director of the National Centers for Environmental Information, a NOAA unit in Asheville, N.C. “Science is always working to improve.”

This won't do. The "anti-science" charge has little to with morality. When someone like Rick Perry - an avowed anthropogenic climate change and evolution denialist - is accused of rejecting science, it's an attack on Perry's epistemological beliefs rather than moral values. Even though the scientific consensus is clear on both questions, Perry refuses to accept both. By rejecting well-supported scientific truths on, say, theological grounds, he is implicitly denying that the scientific method (rather than, say, theological reasoning) is the best way to determine truths about the natural world. That's what being "anti-science" is.

Being pro-science may mean being committed to the idea that advancing scientific knowledge is good for the world, sure, but that scientific knowledge doesn't always say we should try to control the natural world. Science is at its core is a reasoning process - we arrive at certain conclusions through experiments, peer evaluation, etc. So if the best scientific evidence suggests "humans do bad things when they mess with the natural world in fashion X" then the science is telling us not to mess with the natural world in fashion X! Indeed, scientific findings often serve as evidence in debates over the environmental impact of new technology, oftentimes on both sides. There's nothing intrinsic to scientific epistemology or practice that implies a moral commitment to increasing human control over the natural world or to widespread commercial use of the new technologies its discoveries enable

Another way to put it is that scientists have a goal of advancing human knowledge. They often do that with particular ends in mind (e.g., cancer scientists want to cure cancer), but there's no reason to believe that end is always increasing human control. It could be that a scientist might want to demonstrate the dangers of certain technologies or the limits of human ability to successfully interfere with the workings of the natural world. 

Unprecedented Level of Human Harm to Sea Life Is Forecast

A team of scientists, in a groundbreaking analysis of data from hundreds of sources, has concluded that humans are on the verge of causing unprecedented damage to the oceans and the animals living in them.

A number of experts said the result was a remarkable synthesis, along with a nuanced and encouraging prognosis.