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Updated: 2 hours 48 min ago

Preterm children have more medical sleep problems but fall asleep more independently

Thu, 09/21/2017 - 21:13
A new study suggests that while healthy preterm children have more medical sleep problems than full-term children, they are more likely to fall asleep independently.

New technique accurately digitizes transparent objects

Thu, 09/21/2017 - 21:12
A new imaging technique makes it possible to precisely digitize clear objects and their surroundings, an achievement that has eluded current state-of-the-art 3-D rendering methods.

Babies can learn that hard work pays off

Thu, 09/21/2017 - 21:12
A new study reveals babies as young as 15 months can learn the value of hard work. Researchers found babies who watched an adult struggle to reach two different goals before succeeding tried harder at their own difficult task than babies who saw an adult succeed effortlessly.

New hope for people with fibromyalgia

Thu, 09/21/2017 - 21:12
A novel psychological therapy that encourages addressing emotional experiences related to trauma, conflict and relationship problems has been found helpful for people with the chronic pain condition fibromyalgia.

Unique gene therapy prevents, reverses multiple sclerosis in animal model

Thu, 09/21/2017 - 21:12
Multiple sclerosis can be inhibited or reversed using a novel gene therapy technique that stops the disease's immune response in mouse models, researchers have found.

Into more thin air: Exploring the adaptation extremes of human high altitude sickness and fitness

Thu, 09/21/2017 - 21:12
Many research groups have explored human adaptation to high altitude living among three major far-flung global populations: Tibetans, Ethiopians and Peruvians. But few have simultaneously explored the other extreme---maladaptation----in the form of chronic mountain sickness (CMS). Now, in the largest whole genome study of its kind, an international research team led by University of California San Diego's Chairman of Pediatrics, Dr. Gabriel Haddad, has expanded on their recent study of understanding both adaptation extremes in a Peruvian population.

Dancing electrons lose the race

Thu, 09/21/2017 - 19:13
Ultrashort pulses of light were employed by physicists to start a race between electrons emitted from different initial states in a solid material. Timing this race revealed an unexpected result: the fastest electrons arrived in last place.

Synthetic molecule 'kicks and kills' some persistent HIV in mice

Thu, 09/21/2017 - 19:13
Scientists have designed a synthetic molecule that can reactivate dormant human immunodeficiency virus (HIV) in mice and lead to the death of some of the infected cells, according to a new study.

Japanese encephalitis vaccine cuts disease rate in Nepal

Thu, 09/21/2017 - 19:13
From 2006 through 2011, Nepal conducted a mass immunization campaign against Japanese encephalitis -- a mosquito-borne viral disease. Now, investigators have reported that the vaccination effort prevented thousands of cases of Japanese encephalitis (JE) and cut JE rates in Nepal by at least 78 percent.

Your neurons register familiar faces, whether you notice them or not

Thu, 09/21/2017 - 19:13
When people see an image of a person they recognize particular cells light up in the brain. Now, researchers have found that those cells light up even when a person sees a familiar face or object but fails to notice it. The only difference is that the neural activity is weaker and delayed in comparison to what happens when an observer consciously registers and can recall having seen a particular image.

Ancient DNA data fills in thousands of years of human prehistory in Africa

Thu, 09/21/2017 - 19:13
By sequencing the ancient genomes of 15 individuals from different parts of Africa, researchers reporting in the journal Cell on Sept. 21 have reconstructed the prehistory of humans on the continent, going back thousands of years. The findings shed light on which human populations lived in eastern and southern Africa between 8,000 and 1,000 years ago, the researchers say.

Scientists sequence asexual tiny worm whose lineage stretches back 18 million years

Thu, 09/21/2017 - 19:13
A team of scientists has sequenced, for the first time, a tiny worm that belongs to a group of exclusively asexual species that originated approximately 18 million years ago -- making it one of the oldest living lineages of asexual animals known.

Detecting cosmic rays from a galaxy far, far away

Thu, 09/21/2017 - 19:12
Where do cosmic rays come from? Solving a 50-year-old mystery, a collaboration of researchers has discovered it's much farther than the Milky Way.

Jellyfish, with no brains, still seem to sleep

Thu, 09/21/2017 - 19:12
The discovery that primitive jellyfish sleep suggests that sleep is an ancient, evolutionarily conserved behavior.

Why poison frogs don't poison themselves

Thu, 09/21/2017 - 19:12
Poison frogs harbor some of the most potent neurotoxins we know, yet scientists have long wondered -- how do these frogs keep from poisoning themselves? Scientists are now a step closer to resolving that head-scratcher. And the answer has potential consequences for the fight against pain and addiction.

Reconstructing how Neanderthals grew, based on an El Sidrón child

Thu, 09/21/2017 - 19:12
How did Neanderthals grow? Does modern man develop in the same way as Homo neanderthalensis did? How does the size of the brain affect the development of the body? Researchers have studied the fossil remains of a Neanderthal child's skeleton in order to establish whether there are differences between the growth of Neanderthals and that of sapiens.

Rapid hepatitis C testing may help better screen young adults

Thu, 09/21/2017 - 19:12
Routine and rapid hepatitis C virus testing among young adults who use injection drugs improves life expectancy and may provide a good use of limited resources, according to new research.

Early trilobites had stomachs, new fossil study finds

Thu, 09/21/2017 - 19:12
Exceptionally preserved trilobite fossils from China, dating back to more than 500 million years ago, have revealed new insights into the extinct marine animal's digestive system. The new study shows that at least two trilobite species evolved a stomach structure 20 million years earlier than previously thought.

Exosomes are the missing link to insulin resistance in diabetes

Thu, 09/21/2017 - 19:11
Chronic tissue inflammation resulting from obesity is an underlying cause of insulin resistance and type 2 diabetes. But the mechanism by which this occurs has remained cloaked, until now. In a new paper, researchers identified exosomes -- extremely small vesicles or sacs secreted from most cell types -- as the missing link.

How staph cells dodge the body's immune system

Thu, 09/21/2017 - 17:58
For years, medical investigators have tried and failed to develop vaccines for a type of staph bacteria associated with the deadly superbug MRSA. But a new study shows how staph cells evade the body's immune system, offering a clearer picture of how a successful vaccine would work.