Today's Science News

Tuesday, April 21, 2015

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from universities, journals, and other organizations

Cold Spot Suggests Largest Structure in Universe: A Supervoid 1.3 Billion Light Years Across

Apr. 20, 2015 — In 2004, astronomers examining a map of the radiation left over from the Big Bang discovered the Cold Spot, a larger-than-expected unusually cold area of the sky. The physics surrounding the Big Bang ... full story

Bacterial Flora of Remote Tribespeople Carries Antibiotic Resistance Genes

Apr. 17, 2015 — Scientists have found antibiotic resistance genes in the bacterial flora of a South American tribe that never before had been exposed to antibiotic drugs. The findings suggest that bacteria in the ... full story

Repeated Marine Predator Evolution Tracks Changes in Ancient and Anthropocene Oceans

Apr. 16, 2015 — Scientists synthesized decades of scientific discoveries to illuminate the common and unique patterns driving the extraordinary transitions that whales, dolphins, seals and other species underwent as ... full story

Intense Magnetic Field Close to Supermassive Black Hole

Apr. 16, 2015 — Astronomers have revealed an extremely powerful magnetic field, beyond anything previously detected in the core of a galaxy, very close to the event horizon of a supermassive black ... full story

Proto-Suns Teeming With Prebiotic Molecules

Apr. 16, 2015 — Complex organic molecules such as formamide, from which sugars, amino acids and even nucleic acids essential for life can be made, already appear in the regions where stars similar to our Sun are ... full story

Black Hole Hunters Tackle a Cosmic Conundrum

Apr. 20, 2015 — Astrophysicists have not only proven that a supermassive black hole exists in a place where it isn't supposed to be, but in doing so have opened a new door to what things were like in the early ... full story

Getting a Better Grasp of Primate Grip

Apr. 20, 2015 — Scientists are coming to grips with the superior grasping ability of humans and other primates throughout history. In a new study, a research team found that even the oldest known human ancestors may ... full story

Scaled-Up Version of Our Solar System 130 Light-Years Away

Apr. 20, 2015 — Astronomers has obtained the first results from the LEECH exoplanets survey. The findings reveal new insights into the architecture of HR8799, a 'scaled-up' version of our solar system 130 ... full story

Pulsing Light May Indicate Supermassive Black Hole Merger

Apr. 20, 2015 — As two galaxies enter the final stages of merging, scientists have theorized that the galaxies' supermassive black holes will form a 'binary,' or two black holes in such close orbit ... full story

Vampire Squid Discovery Shows How Little We Know of the Deep Sea

Apr. 20, 2015 — Among soft-bodied cephalopods, vampire squid live life at a slower pace. At ocean depths from 500 to 3,000 meters, they don't swim so much as float, and they get by with little oxygen while ... full story

Global Pandemic of Fake Medicines Poses Urgent Risk, Scientists Say

Apr. 20, 2015 — Poor quality medicines are an urgent threat that could undermine decades of successful efforts to combat HIV/AIDS, malaria and TB, according to experts. Scientists report up to 41 percent of ... full story

Drugs Stimulate Body’s Own Stem Cells to Replace the Brain Cells Lost in Multiple Sclerosis

Apr. 20, 2015 — Scientists have identified two topical drugs (miconazole and clobetasol) capable of stimulating regeneration of damaged brain cells and reversing paralysis in animal models of ... full story

Technology Can Transfer Human Emotions to Your Palm Through Air, Say Scientists

Apr. 20, 2015 — Human emotion can be transferred by technology that stimulates different parts of the hand without making physical contact with your body, a study has shown. For example, short, sharp bursts of air ... full story

Tiniest Circuits: Light-Controlled Molecule Switching

Apr. 20, 2015 — Researchers have succeeded in light-controlled molecule switching. Scientists are working on storing and processing information on the level of single molecules to create the smallest possible ... full story

Are Populations Aging More Slowly Than We Think?

Apr. 15, 2015 — Faster increases in life expectancy reflect a process in which people become healthier, generally more capable, and indeed younger in many ways even if they have lived longer lives, according to ... full story

Featured Videos

from AP, Reuters, AFP, and other news services

Humanoid Robot Can Recognise and Interact With People

Humanoid Robot Can Recognise and Interact With People

Reuters - Innovations Video Online (Apr. 20, 2015) — An ultra-realistic humanoid robot called 'Han' recognises and interprets people's facial expressions and can even hold simple conversations. Developers Hanson Robotics hope androids like Han could have uses in hospitality and health care industries where face-to-face communication is vital. Matthew Stock reports. Video provided by Reuters
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Deepwater And Dolphins: The Oil Spill's Impact 5 Years On

Deepwater And Dolphins: The Oil Spill's Impact 5 Years On

Newsy (Apr. 20, 2015) — Five years on, the possible environmental impact of the Deepwater Horizon spill includes a sustained die-off of bottlenose dolphins, among others. Video provided by Newsy
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Japan Humanoid Robot Receives Customers at Department Store

Japan Humanoid Robot Receives Customers at Department Store

AFP (Apr. 20, 2015) — She can smile, she can sing and she can give you guidance at one of the most upscale department stores in Tokyo...a female-looking humanoid makes her debut as a receptionist Video provided by AFP
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Our Love Of Puppy Dog Eyes Explained By Science

Our Love Of Puppy Dog Eyes Explained By Science

Newsy (Apr. 17, 2015) — Researchers found a spike in oxytocin occurs in both humans and dogs when they gaze into each other's eyes. Video provided by Newsy
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last updated on 2015-04-21 at 9:08 am EDT

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Mindfulness-Based Therapy Could Offer an Alternative to Antidepressants for Preventing Depression Relapse

Apr. 20, 2015 — The results come from the first ever large study to compare mindfulness-based therapy – structured training for the mind and body which aims to change the way people think and feel about their ... full story

Listen to Your Heart: Why Your Brain May Give Away How Well You Know Yourself

Apr. 20, 2015 — "Listen to your heart," sang Swedish pop group Roxette in the late Eighties. But not everyone is able to tune into their heartbeat, according to an international team of researchers -- and half of us ... full story

A Bad Buzz: Men With HIV Need Fewer Drinks to Feel Effects

Apr. 20, 2015 — Researchers compared the number of drinks that men with HIV infection, versus those without it, needed to get a buzz. They found that HIV-infected men were more sensitive to the effects of alcohol ... full story

Middle-Aged Congenital Heart Disease Survivors May Need Special Care

Apr. 20, 2015 — For the first time, the American Heart Association has made recommendations for treating people older than 40 with congenital heart disease. "People born with congenital heart disease are living ... full story

Long Non-Coding RNA Modulates Colorectal Cancer Metabolism

Apr. 20, 2015 — Long non-coding RNAs (lncRNA) are unusual in that they don’t encode proteins like normal RNA. Yet they do play a role in regulating cellular functions and interest cancer ... full story

New Guideline Advises When to Treat a First Seizure

Apr. 20, 2015 — A new guideline found that administering an antiepileptic medication immediately after a first seizure reduces the risk of having another seizure within two ... full story

Potential New Lung Cancer Therapy

Apr. 20, 2015 — New findings about regulation of PD-L1, a protein that allows cancer to evade the immune system, has shown therapeutic promise for several cancers, including the most common form of lung ... full story

Excessive Use of Dietary Supplements Linked to Increase Cancer Risk

Apr. 20, 2015 — While dietary supplements may be advertised to promote health, new research shows a link between consumption of over-the-counter supplements and increased cancer risk, if the supplements are taken in ... full story

Frequent Indoor Tanning Among Teens Shows Correlation With Smoking, Social Media Use

Apr. 20, 2015 — More than a third of New Jersey high school students who engage in indoor tanning do so frequently and many would find it hard to stop the practice. Investigators also found that frequent indoor ... full story

PTSD Common in ICU Survivors

Apr. 20, 2015 — Nearly one-quarter of ICU survivors suffer from post-traumatic stress disorder (PTSD), new research has found. They also identified possible triggers for PTSD and indicated a potential preventive ... full story

Extending Natalizumab Up to 8 Weeks Shown Safe and Effective in Patients With Multiple Sclerosis, Report Says

Apr. 20, 2015 — Extending the dose of natalizumab from four weeks up to eight weeks was shown to be well-tolerated and effective in patients, and resulted in no cases of the potentially fatal side effect progressive ... full story

New Tactic Targets Brain Tumors

Apr. 20, 2015 — Patients who are obese, diabetic or both have the highest incidence of brain tumors, and they offer a clue that insulin is a factor for some glioblastoma patients. But a new study suggests drugs ... full story

Putting the 'Education' in 'Educational' Apps

Apr. 20, 2015 — New apps developed for children come online every day and many of them are marketed or labeled as 'educational' -- but how can we tell which of these thousands of apps will actually help children ... full story

Reducing Global Tobacco Use

Apr. 20, 2015 — Although global efforts to cut tobacco use have had some success, more can be done to reduce the number of deaths from smoking, according to a new commentary. More than 170 countries have signed the ... full story

Autism-Epilepsy Connection Explored in Four Studies

Apr. 20, 2015 — Epilepsy affects nearly 30 percent of all people with autism spectrum disorder (ASD), a neurobehavioral condition marked by impaired social and language development. Conversely, many patients with ... full story

Is There Such a Thing as 'Pure' Autism? Genetic Analysis Says No

Apr. 20, 2015 — The search for genes that contribute to the risk for autism has made tremendous strides over the past 3 years. As this field has advanced, investigators have wondered whether the diversity of ... full story

Successfully Managing Fatigue in People With Multiple Sclerosis

Apr. 20, 2015 — Fatigue is one of the most commonly reported and debilitating symptoms of multiple sclerosis (MS) and can significantly reduce an individual's quality of life. Unlike the tiredness that we all ... full story

Most Americans Say Medical Marijuana Shouldn't Be Used by Kids or in Front of Kids, Legal or Not

Apr. 20, 2015 — Medical marijuana and children don't mix, most Americans say. While nearly two-thirds of people agree that their state should allow medical marijuana for adults, half as many -- just over a third -- ... full story

Broccoli Sprout Extract Promising for Head and Neck Cancer Prevention

Apr. 19, 2015 — Broccoli sprout extract protects against oral cancer in mice and proved tolerable in a small group of healthy human volunteers, according to new ... full story

Getting Foster Youth Through College Will Take Structured Support, Study Concludes

Apr. 19, 2015 — The college graduation rate for students who have lived in foster care is 3 percent, among the lowest of any demographic group in the country. And this rate is unlikely to improve unless community ... full story

'MyEarth' Energy-Tracking App Encourages Sustainable Behaviors

Apr. 20, 2015 — For a generation motivated by technology and fast-moving information, a professor has created an energy-tracking app to make reducing day-to-day energy usage more ... full story

Two Tested Approaches to Treating Childhood Obesity Appear Effective

Apr. 20, 2015 — A study of two protocols for the treatment of childhood obesity finds that both were successful in limiting one-year weight gain in obese children. Both interventions use information technology to ... full story

Ways to Avoid Catching Diseases from Pets

Apr. 20, 2015 — Pets can pass diseases to humans, especially when a pet owner's immune system is compromised. Here, veterinarians outline ways for families to avoid disease transmission by choosing the right type of ... full story

Kids With ADHD Must Squirm to Learn, Study Says

Apr. 17, 2015 — Excessive movement common among children with attention-deficit/hyperactivity disorder is actually vital to how they remember information and work out complex cognitive tasks, a new study shows. The ... full story

Text Messages a Good Way to Support Mothers With Postpartum Depression

Apr. 17, 2015 — New research explores the feasibility of helping low-income mothers through postpartum depression using text messages. The objective of the study was to evaluate the feasibility of sending supportive ... full story

Study Links Brain Anatomy, Academic Achievement, and Family Income

Apr. 17, 2015 — Many years of research have shown that for students from lower-income families, standardized test scores and other measures of academic success tend to lag behind those of wealthier students. A new ... full story

Smoking and Mother's Genetics Combine to Increase Likelihood of Twins

Apr. 17, 2015 — African American mothers who smoke and have a genetic profile that includes a single nucleotide polymorphism, SNP, of the TP53 gene have an increased likelihood of having twins, concluded a team of ... full story

Self-Affirmations May Calm Jitters, Boost Performance

Apr. 17, 2015 — Individuals in positions of low power perform worse under pressure, relative to those in positions of high power. However, new research shows that self-affirmations can effectively reduce the power ... full story

Nothing Beats a Good Night's Sleep for Helping People Absorb New Information, New Research Reveals

Apr. 17, 2015 — Researchers have found that successful long-term learning happens after classroom teaching, after the learners have slept on the new ... full story

Facebook Users' Wishful Thinking: Cyberbullying, Depression Won't Happen to Me

Apr. 16, 2015 — Facebook users with so-called optimistic bias think they're less likely than other users to experience cyberbullying, depression and other negative social and psychological effects from using the ... full story

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Better Battery Imaging Paves Way for Renewable Energy Future

Apr. 20, 2015 — In a move that could improve the energy storage of everything from portable electronics to electric microgrids, researchers have developed a novel X-ray imaging technique to visualize and study the ... full story

Electron Transfer Challenges a Common Fluorescence Technique

Apr. 20, 2015 — Using advanced technology, scientists have uncovered evidence that challenges one of the most widespread techniques in ... full story

Nondestructive Micron Resolution 3-D Imaging of Biological Cells With Sound

Apr. 20, 2015 — Researchers have described the first known demonstration of 3-D cell imaging using picosecond ultrasonics, and show that picosecond ultrasonics can achieve micron resolution of single cells, imaging ... full story

Let It Snow: Intricacies of Marine Snow Formation in the Gulf of Mexico Following the Deepwater Horizon Oil Spill

Apr. 20, 2015 — Before Deepwater Horizon, scientists didn't know that oil and marine snow had anything to do with each other. "Marine snow is like dust bunnies in the house," explained a research scientist who has ... full story

Chemists Create Modular System for Placing Proteins on Membranes

Apr. 20, 2015 — With a tag, an anchor and a cage that can be unlocked with light, chemists have devised a simple, modular system that can locate proteins at the membrane of a ... full story

Happily Ever After: Scientists Arrange Protein-Nanoparticle Marriage

Apr. 20, 2015 — Researchers have discovered a way to easily and effectively fasten proteins to nanoparticles -- essentially an arranged marriage -- by simply mixing them together. The biotechnology is in its ... full story

Giant Magnetic Effects Induced in Hybrid Materials

Apr. 20, 2015 — For a magnetic thin film deposited onto a transition metal oxide film, the magnetic properties change dramatically as the oxide undergoes a structural phase transition. The hybrid between a simple ... full story

Quantum Model Reveals Surface Structure of Water

Apr. 20, 2015 — Physicists have used a new quantum model to reveal the molecular structure of water's liquid ... full story

Acoustically Driven Controls Created for Smartphones

Apr. 20, 2015 — Researchershave developed an inexpensive alternative to a smartphone's touchscreen -- a toolbox of physical knobs, sliders and other acoustically driven mechanisms that can be readily added to any ... full story

New Path to Loss-Free Electricity

Apr. 20, 2015 — Electric current flows without any resistance in a superconducting state thanks to a surprising redistribution of bonding electrons and the associated electronic and atomic behavior after ... full story

Construction of the LSST Telescope Begins in Chile

Apr. 20, 2015 — The first stone of the future LSST telescope was laid on 14 April 2015 by the Chilean President Michelle Bachelet, at the Cerro Pachσn site in the Chilean Andes. The LSST will be equipped with the ... full story

A Blueprint for Clearing the Skies of Space Debris

Apr. 17, 2015 — Scientists have put forward a blueprint for a purely space-based system to solve the growing problem of space debris. The proposal will be used to detect objects, and a recently developed ... full story

Dating the Moon-Forming Impact Event With Meteorites

Apr. 16, 2015 — Through a combination of data analysis and numerical modeling work, researchers have found a record of the ancient moon-forming giant impact observable in stony meteorites. The research indicates ... full story

Giant Galaxies Die from the Inside Out: Star Formation Shuts Down in the Centers of Elliptical Galaxies First

Apr. 16, 2015 — Astronomers have shown for the first time how star formation in "dead" galaxies sputtered out billions of years ago. Astronomers have revealed that three billion years after the Big Bang, these ... full story

Dwarf Planet Ceres Color Map Reveals Surface Diversity

Apr. 16, 2015 — A new color map of dwarf planet Ceres, which NASA's Dawn spacecraft has been orbiting since March, reveals the diversity of the surface of this planetary body. Differences in morphology and color ... full story

NASA’s New Horizons Spacecraft Nears Historic July 14 Encounter With Pluto

Apr. 15, 2015 — NASA's New Horizons spacecraft is three months from returning to humanity the first-ever close up images and scientific observations of distant Pluto and its system of large and small ... full story

Northern Lights: How 'Black' Auroras Actually Work

Apr. 15, 2015 — While our understanding of how the aurora's shimmering curtains of colour are formed, scientists have struggled to explain the black patches between the bright beams. Now scientists have discovered ... full story

First Signs of Self-Interacting Dark Matter? Dark Matter May Not Be Completely Dark After All

Apr. 14, 2015 — For the first time dark matter may have been observed interacting with other dark matter in a way other than through the force of gravity. Observations of colliding galaxies have picked up the first ... full story

Planet Spotted Deep Within Our Galaxy: One of the Most Distant Planets Known

Apr. 14, 2015 — NASA's Spitzer Space Telescope has teamed up with a telescope on the ground to find a remote gas planet about 13,000 light-years away, making it one of the most distant planets ... full story

Hot Quark Soup That Existed at the Dawn of the Universe

Apr. 14, 2015 — Thousands of times a second the Relativistic Heavy Ion Collider at Brookhaven National Laboratory re-creates the hot quark soup that existed at the dawn of the universe. Particles composed of heavy ... full story

Innovation Boosts Wi-Fi Bandwidth Tenfold

Apr. 20, 2015 — Researchers have invented a new technology that can increase the bandwidth of Wi-Fi systems by 10 times, using LED lights to transmit information. It could be integrated with existing Wi-Fi systems ... full story

Understanding Thermo-Mechanical Properties of a New Class of Materials

Apr. 17, 2015 — Scientists describe how an accurate statistical description of heterogeneous particulate materials, which is used within statistical micromechanics theories, governs the overall thermo-mechanical ... full story

Wearable Device Turns User's Thumbnail Into a Miniature Wireless Track Pad

Apr. 16, 2015 — Researchers are developing a new wearable device that turns the user's thumbnail into a miniature wireless track pad. They envision that the technology could let users control wireless devices when ... full story

Fighting the Next Generation of Cyberattacks

Apr. 16, 2015 — Computer scientists are developing software to detect so-called algorithmic attacks, an emerging hacking threat that is nearly impossible to find with existing security ... full story

Virtual Reality May Be Effective Tool for Evaluating Balance Control in Glaucoma Patients

Apr. 16, 2015 — Falls are the leading cause of injury-related death and morbidity in older adults, especially those with a chronic eye disease such as glaucoma. To investigate this problem, a multidisciplinary group ... full story

New Software Analyses the Effect of Climate Change on Buildings from the Cloud

Apr. 16, 2015 — Construction companies have begun to use a simulation software which analyses for the first time the entire life cycle of a building, from creation to deconstruction. The tool, which can be used in ... full story

Novel Plasma Diagnostics Method

Apr. 16, 2015 — Physicists have now devised an elegant plasma pressure diagnostic method by studying forces akin to the pressure change at the inner walls of energy saving light bulb when the light is switched on. ... full story

Big Data Key to Precision Medicine's Success

Apr. 15, 2015 — Technological advances are enabling scientists to sequence the genomes of cancer tumors, revealing a detailed portrait of genetic mutations that drive these diseases. But genomic studies are only one ... full story

Patents Forecast Technological Change

Apr. 15, 2015 — Engineers have devised a formula for estimating how fast a technology is advancing, based on information gleaned from relevant ... full story

New Method Increases Accuracy of Ovarian Cancer Prognosis and Diagnosis

Apr. 15, 2015 — Scientists have uncovered patterns of DNA anomalies that predict a woman's outcome significantly better than tumor stage. In addition, these patterns are the first known indicator of how well a woman ... full story

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Where Humans and Nature Collide: Roadkill Hot Spots Identified in California

Apr. 20, 2015 — A map shows how California's state highway system is strewn with roadkill "hot spots," which are identified in a newly released report. The data could help state highway planners take measures to ... full story

Soil Nutrients May Limit Ability of Plants to Slow Climate Change

Apr. 20, 2015 — Many scientists assume that the growing level of carbon dioxide in the atmosphere will accelerate plant growth. However, a new study suggests much of this growth will be curtailed by limited soil ... full story

Oldest Fossils Controversy Resolved

Apr. 20, 2015 — New analysis of world-famous 3.46-billion-year-old rocks is set to finally resolve a long running evolutionary controversy. The new research shows that structures once thought to be Earth's oldest ... full story

Importance of 'Self-DNA' for Maintaining Diversity Among Species

Apr. 20, 2015 — In natural plant communities, diversity is maintained by limits set on each plant by itself. This involves a detrimental effect of self-DNA -- DNA from the same species released during decomposition ... full story

Oral Milk Thistle Extract Stops Colorectal Cancer Stem Cells from Growing Tumors

Apr. 20, 2015 — A new study shows that orally administering the chemical silibinin, purified from milk thistle, slows the ability of colorectal cancer stem cells to grow the disease. When stem cells from tumors ... full story

Down to Three Wolves on Isle Royale

Apr. 20, 2015 — Only three wolves seem to remain in Isle Royale National Park. Researchers observed the wolves during their annual Winter Study, and the lone group, at an unprecedented low, is a sharp decline from ... full story

Genetic Code of Upland Cotton Cracked

Apr. 20, 2015 — In a groundbreaking achievement, scientists have decoded the intricately woven genetic makeup of Upland cotton for the first time in the ancient plant's history. Upland cotton, which accounts for ... full story

Big Bottoms Aren't Everything to Male Baboons

Apr. 20, 2015 — While the female baboon's big red bottom may be an eyesore to some, it has an aphrodisiac effect on her mates. Biologists have long thought that baboon males prefer females with bigger backsides as ... full story

Bioasphalt: From Microalgae to 'Green Roads? '

Apr. 20, 2015 — Microalgae offer a highly promising alternative to petroleum products without competing for resources used in the food industry. They have now been used for the first time to make asphalt. ... full story

Insects Inspire Next Generation of Hearing Aids

Apr. 20, 2015 — An insect-inspired microphone that can tackle the problem of locating sounds and eliminate background noise is set to revolutionize modern-day hearing aid systems, scientists say. Despite remarkable ... full story

As US Assumes Arctic Council Chairmanship, New Report Emphasizes Cooperation Over Conflict

Apr. 20, 2015 — Although the media often portray the Arctic as a new 'Great Game' ripe for conflict, a group of international Arctic experts has released recommendations aimed at preserving the polar north as an ... full story

Strong Currents Promote Release of Arctic Greenhouse Gas

Apr. 20, 2015 — Ocean and Earth Science researchers reveal how the interplay between ocean currents and marine microbiology serve to regulate potentially damaging emissions of the potent greenhouse gas methane, ... full story

Hurdles to US Climate Change Action Are in Economics and Politics, Not Divided Science

Apr. 20, 2015 — Policymakers argue over the consensus on global warming and climate change, but science is not to blame, experts say. In a new paper, scientists suggest looking at business interests, partisan ... full story

Seafood Samples Had No Elevated Contaminant Levels from Oil Spill, Study Shows

Apr. 17, 2015 — Following the Deepwater Horizon Oil Spill in 2010, many people were concerned that seafood was contaminated by either the oil or dispersants used to keep the oil from washing ashore. A new study ... full story

Telling the Time of Day by Color

Apr. 17, 2015 — New research has revealed that the color of light has a major impact on how the brain clock measures time of day and on how the animals' physiology and behavior adjust accordingly. The study, for the ... full story

Impacts of Gulf Oil Spill on Marine Organisms on Gulf Coast

Apr. 17, 2015 — Researchers have determined the impacts of the Deepwater Horizon oil spill on marine organisms such as oysters, conch, shrimp, corals as well as marine plankton (microalgae or phytoplankton, rotifers ... full story

Greenland Continuing to Darken

Apr. 17, 2015 — Darkening of the Greenland Ice Sheet is projected to continue as a consequence of continued climate warming, according to ... full story

Evolution Puts Checks on Virgin Births

Apr. 17, 2015 — It seems unnatural that a species could survive without having sex. Yet over the ages, evolution has endowed females of certain species of amphibians, reptiles and fish with the ability to clone ... full story

Engineers Purify Sea and Wastewater in 2.5 Minutes

Apr. 17, 2015 — A group of engineers have created technology to recover and purify, either seawater or wastewater from households, hotels, hospitals, commercial and industrial facilities, regardless of the content ... full story

How Ancient Species Survived or Died Off in Their Old Kentucky Home

Apr. 16, 2015 — Researchers at an old geological site talk 'dirt' about how Ice Age climate change led to the extinction of mammoths and mastodons, but to the evolution and survival of bison, deer and other ... full story

Ancient Crucible Steel Weapon Found in Eastern Europe

Apr. 20, 2015 — Sometimes old friends give you a surprise. Russian archaeologists were conducting a routine examination of an old sabre unearthed seven years ago in Yaroslavl - when it turned out to be possibly the ... full story

Victorian Baby Teeth Could Help Predict Future Health of Children Today

Apr. 16, 2015 — Baby teeth from children who died during the 1845-52 Irish famine could help us predict the future health of children born today, according to new research. Investigators found that the biochemical ... full story

Palaeolithic Remains Show Cannibalistic Habits of Human Ancestors

Apr. 16, 2015 — Analysis of ancient cadavers recovered at a famous archaeological site confirm the existence of a sophisticated culture of butchering and carving human remains, according to a team of ... full story

New Evidence Adds the Capitanian Extinction to the List of Major Extinction Crises

Apr. 15, 2015 — Since the Cambrian Explosion, ecosystems have suffered repeated mass extinctions, with the 'Big 5' crises being the most prominent. Twenty years ago, a sixth major extinction was recognized in the ... full story

Complex Cognition Shaped the Stone Age Hand Axe

Apr. 15, 2015 — The ability to make a Lower Paleolithic hand axe depends on complex cognitive control by the prefrontal cortex, including the 'central executive' function of working memory, a new study finds. The ... full story

Iceberg Armadas Not the Cause of North Atlantic Cooling

Apr. 15, 2015 — Armadas of icebergs were probably not the cause of abrupt episodes of cooling in the North Atlantic over the past 440,000 years, according to new ... full story

Young Offenders in Victorian Times Were Much Less Likely to Re-Offend Than Today

Apr. 15, 2015 — Young offenders in late Victorian times were much less likely to go on to commit other crimes after serving a sentence in an institution than their counterparts today, new research ... full story

40 Million-Year-Old Family Tree of Baleen Whales

Apr. 15, 2015 — New research is providing the most comprehensive picture of the evolutionary history of baleen whales, which are not only the largest animals ever to live on earth, but also among the most ... full story

Bone Eating Worms Dined on Marine Reptile Carcasses

Apr. 14, 2015 — A species of bone-eating worm that was believed to have evolved in conjunction with whales has been dated back to prehistoric times when it fed on the carcasses of giant marine ... full story

There Is More to a Rembrandt Than Meets the Eye, Science Shows

Apr. 14, 2015 — Art historians and scientists use imaging methods to virtually "dig" under or scan various layers of paint and pencil. This is how they decipher how a painter went about producing a masterpiece - ... full story

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Falsified Medicines Taint Global Supply

Apr. 20, 2015 — The threat of falsified medications, also referred to as counterfeit, fraudulent, and substandard, can be quite real, yet the full scope and prevalence of the problem is poorly understood, say ... full story

Study Reveals Cause of Poorer Outcomes for African-American Patients With Breast Cancer

Apr. 18, 2015 — Poorer outcomes for African-American women with estrogen-receptor positive breast cancer, compared with European-American patients, appears to be due, in part, to a strong survival mechanism within ... full story

Experts Warn Ebola Epidemic Could Return With a Vengeance Unless Lessons About Medical Trials Are Learned

Apr. 17, 2015 — Health experts have warned that a greater flexibility must be brought to medical trials to combat diseases like Ebola to avoid facing another nightmare outbreak. The rapidity and spread of the Ebola ... full story

9/11 Leaves Legacy of Chronic Ill Health Among Emergency Medical Services Workers

Apr. 16, 2015 — The 9/11 attacks on the World Trade Center in New York City in 2001 have left a legacy of chronic ill health among emergency medical services workers who came to the rescue of the victims, reveals ... full story

Diversity Is Key to Stability, Grassland Study Finds

Apr. 16, 2015 — Researchers looked at 28 years' worth of data on plant growth, number of species, ecosystem stability and exposure to changes in nitrogen, carbon dioxide, fire, grazing and water collected from ... full story

Socioeconomic Factors Affect Odds of Death After a Lung Cancer Operation

Apr. 16, 2015 — People with limited education and low income have higher odds of death within 30 days after undergoing an operation for lung cancer than those who are more educated and financially better off, ... full story

Western Lifestyle May Limit the Diversity of Bacteria in the Gut

Apr. 16, 2015 — Recent studies consistently show that a modern lifestyle depletes the gut's collection of microbes, but how lifestyle affects the diversity of this gut 'microbiome' is unclear. An analysis of the gut ... full story

For Men, Online Generosity Is a Competition

Apr. 16, 2015 — If you are looking to raise money online for your favorite cause, listen up. A real-world analysis of human behavior shows that men treat online giving as a competitive enterprise. Men will donate ... full story

Firearm-Related Hospitalizations Linked to U. S. Stock Market Performance

Apr. 16, 2015 — Economic climate may impact incidence of firearm-related injuries and fatalities, which pose a burden on U.S. healthcare resources, report ... full story

Teaching Children in Schools About Sexual Abuse May Help Them Report Abuse

Apr. 16, 2015 — Children who are taught about preventing sexual abuse at school are more likely than others to tell an adult if they had, or were actually experiencing sexual abuse. However, the review's authors say ... full story

Interactivity Tools Can Boost Persuasiveness of Websites

Apr. 14, 2015 — Messages conveyed on websites may be more persuasive if theses websites are interactive, according to ... full story

Who's a CEO? Google Image Results Can Shift Gender Biases

Apr. 9, 2015 — A new study assesses how accurately gender representations in online image search results for 45 different occupations -- from CEO to telemarketer to engineer -- match reality. Exposure to skewed ... full story

When Health Risks Go Down, Worker Productivity Goes Up

Apr. 8, 2015 — Changes in employee health risk factors have a significant impact on work productivity, reports a new study. The productivity benefits of improved health are "cumulative over time," highlighting the ... full story

Overconfidence in New Technologies Can Influence Decision-Making

Apr. 8, 2015 — Technological advances in recent decades have transformed most aspects of daily life, and technology now plays a major role in business and society. However, little is known about how perceptions of ... full story

How Long Do Firms Live? Finding Patterns of Company Mortality in Market Data

Apr. 1, 2015 — New research reveals a surprising insight: publicly-traded firms die off at the same rate regardless of their age or economic ... full story

Ads in Free Mobile Apps Have Hidden Costs for Both Users and Developers

Apr. 1, 2015 — Advertising may allow developers to make smartphone apps free, but it has hidden costs -- draining batteries, eating up network data, and using more ... full story

Interview Blues: Anxious, Slow Talkers Often Do Not Get the Job

Apr. 1, 2015 — Job candidates should focus on exuding warmth and assertiveness, a new study says. Researchers offer a few tips for those who are worried that their nerves might stand between them and acing their ... full story

Cultivating Timeflow: Can Consumers Shape How They Experience Time?

Mar. 31, 2015 — Why does time seem to crawl if you're waiting in line at the post office, but hours can fly by in minutes when you're doing something fun? A new study examines the factors that determine how ... full story

The Brain in the Supermarket: Index Strategy Informs Decision-Making

Mar. 26, 2015 — Researchers suggest that your brain is most likely deploying an 'index strategy,' a straightforward ranking of products, when you shop. It may not be an absolutely perfect calculation, given all the ... full story

Work Site Wellness Centers Equate to Weight Loss and Health Care Savings, Expert Says

Mar. 25, 2015 — As employees and employers face higher health care costs, work site wellness are becoming increasingly more important to help control the costs of health care and encourage healthy lifestyle ... full story

Family Therapist Suggests Parents Relearn to Play

Apr. 15, 2015 — A family therapist has one word for parents who want to raise a healthy, happy child: ... full story

Childhood Self-Control Linked to Enhanced Job Prospects Throughout Life

Apr. 14, 2015 — Parents who work to instill self-control in their children will see them reap the benefits not only in the short-term but throughout their working life, according to new ... full story

Civic Engagement May Stave Off Brain Atrophy, Improve Memory

Apr. 14, 2015 — Instead of shrinking as expected, as part of the normal aging process, the memory center in the brains of seniors maintained their size and, in men, grew modestly after two years in a program that ... full story

Why Do People Play Violent Video Games? Storytelling and Meaningful Choices May Play a Part

Apr. 9, 2015 — A wealth of studies have shown that violent video games contribute to antisocial and aggressive behavior. But what makes those games appealing in the first place? One possibility is that storytelling ... full story

Don't Blame Kids If They Do Not Enjoy School, Study of Twins Suggests

Apr. 8, 2015 — When children are unmotivated at school, new research suggests their genes may be part of the equation. A study of more than 13,000 twins from six countries found that 40 to 50 percent of the ... full story

The Brain Game: How Decreased Neural Activity May Help You Learn Faster

Apr. 6, 2015 — Why are some people able to master a new skill quickly while others require extra time or practice? Counterintuitive as it may seem, study participants who showed decreased neural activity learned ... full story

Element of Surprise Helps Babies Learn

Apr. 2, 2015 — Cognitive psychologists have demonstrated for the first time that babies learn new things by leveraging the core information they are born with. When something surprises a baby, like an object not ... full story

Well-Designed Classrooms Can Boost Learning Progress in Primary School Pupils by Up to 16% in a Single Year, Research Reveals

Apr. 1, 2015 — Clear evidence has now been gathered that well-designed primary school classrooms boost children's learning progress in reading, writing and math. Natural light, temperature, air quality, color and ... full story

Insight Creates New Memories in the Brain

Apr. 1, 2015 — Scientists have visualized - for the first time - how the brain recombines memories of past events when these are complemented by new ... full story

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