Latest Science News -- ScienceDaily
Advanced animal society thrives without males
Tue, 25 Sep 2018 11:00:51 EDT
Termite colonies have been found to thrive and reproduce without males, new research from the University of Sydney reveals. The findings provide new evidence that males aren't required to maintain some advanced animal populations. They add momentum to questions about the impact and function of males in animal societies.
Screening using body mass index alone may miss every second preschooler with excess stomach fat
Tue, 25 Sep 2018 11:00:41 EDT
When assessing whether preschoolers are overweight, health professionals should use other measures such as waist-to-height ratio in addition to the body mass index (BMI). A study shows that this is because measuring the BMI of younger children often fails to identify those with excess stomach fat and possible associated health problems.
Cancer: Establishing metastasis
Tue, 25 Sep 2018 11:00:35 EDT
Scientists have discovered that a protein called VRK1 might help cancer to take root in new parts of the body. VRK1 was discovered to be necessary for mesenchymal-to-epithelial transition, which scientists suspect may be important for the establishment of metastasis.
Indoor HEPA filters significantly reduce pollution indoors when outside air unhealthy, study finds
Tue, 25 Sep 2018 11:00:30 EDT
Outdoor air pollution is a major contributor to indoor air pollution -- but high-efficiency particulate air (HEPA) filters used in the home significantly reduce fine-particulate matter in the air compared with non-HEPA air filters, according to a new study.
Molecule capable of halting and reverting Parkinson's neurodegeneration identified
Tue, 25 Sep 2018 11:00:28 EDT
The small SynuClean-D molecule interrupts the formation of the alpha-synuclein amyloid fibres responsible for the onset of Parkinson's disease, and reverts the neurodegeneration caused by the disease.
New cause of brain bleeds identified
Tue, 25 Sep 2018 09:40:22 EDT
Neurologists have provided, for the first time, evidence that blood deposits in the brain may not require a blood vessel tear. The researchers found that brain endothelial cells, the cells that line blood vessels of the brain, have the capacity for engulfing red blood cells and depositing them outside the blood vessels and into the substance of the brain, without requiring a disruption of the vasculature.
Motor learning for precise motor execution
Tue, 25 Sep 2018 09:40:18 EDT
Scientists have identified acquisition of two types of internal models for motor control, which are likely to be stored in the cerebellum. They show that motor control in human hand reaching movement relies on two types of motor learning: (i) acquisition of explicit motor control and (ii) acquisition of implicit motor control.
Hybrid operating room streamlines diagnosis, treatment of lung cancer
Tue, 25 Sep 2018 09:10:28 EDT
Representing a paradigm shift in thoracic surgery, the hybrid operating room combines three techniques into a single appointment eliminating multiple clinical visits for improved patient experience and outcomes.
Artificial intelligence to improve drug combination design and personalized medicine
Tue, 25 Sep 2018 07:51:24 EDT
A new auto-commentary looks at how an emerging area of artificial intelligence, specifically the analysis of small systems-of-interest specific datasets, can be used to improve drug development and personalized medicine.
Exercise may delay cognitive decline in people with rare Alzheimer's disease
Tue, 25 Sep 2018 07:51:21 EDT
For individuals carrying a genetic mutation that causes Alzheimer's disease, engaging in at least 2.5 hours of physical activity per week may have beneficial effects on markers of Alzheimer's disease brain changes and may delay cognitive decline, according to a new study.
Lung inflammation from childhood asthma linked with later anxiety
Tue, 25 Sep 2018 07:51:17 EDT
Persistent lung inflammation may be one possible explanation for why having asthma during childhood increases your risk for developing anxiety later in life, according to researchers.
Genome duplication drives evolution of species
Tue, 25 Sep 2018 07:51:14 EDT
Polyploid plants have a duplicate set of chromosomes. As a result, large-scale genetic changes are therefore possible in the new species, making it more adaptable in comparison with the parental species, as has now been demonstrated by researchers using rockcress.
New drug blocks pancreatic cancer growth in mice, study finds
Tue, 25 Sep 2018 07:51:05 EDT
A newly developed drug can prevent the most common type of pancreatic cancer from growing and spreading in laboratory mice, according to a new study. The study also demonstrated in mice that the drug, Metavert, may prevent patients from developing a resistance to currently used pancreatic cancer chemotherapies.
Ancient mice discovered by climate cavers
Mon, 24 Sep 2018 18:50:50 EDT
The fossils of two extinct mice species have been discovered in caves in tropical Queensland by scientists tracking environment changes.
Birds' voiceboxes are odd ducks
Mon, 24 Sep 2018 17:45:09 EDT
Birds' voiceboxes are in their chests instead of their throats like mammals and reptiles. Scientists aren't sure how or why birds evolved these unique voiceboxes, but a new study sheds some light on how they came about. Similarities in the windpipes of birds, crocodiles, cats, mice, and salamanders suggest that birds' weird voiceboxes might have arisen from a windpipe reinforcement. From this, scientists can learn about the sounds bird ancestors -- dinosaurs -- made.
Common weed killer linked to bee deaths
Mon, 24 Sep 2018 17:45:06 EDT
Honey bees exposed to glyphosate, the active ingredient in Roundup, lose some of the beneficial bacteria in their guts and are more susceptible to infection and death from harmful bacteria. Scientists believe this is evidence that glyphosate might be contributing to the decline of honey bees and native bees around the world.
Evidence that addictive behaviors have strong links with ancient retroviral infection
Mon, 24 Sep 2018 17:45:03 EDT
New research shows that an ancient retrovirus -- HK2 -- is more frequently found in drug addicts and thus is significantly associated with addiction.
New earthquake risk model could better inform disaster planning
Mon, 24 Sep 2018 17:45:00 EDT
Researchers have developed a new way to model seismic risk, which they hope will better inform disaster risk reduction planning in earthquake-prone areas.
Wigner crystal -- not Mott insulator -- in 'magic-angle' graphene
Mon, 24 Sep 2018 17:44:57 EDT
Recently, scientists created a stir in the field of condensed matter physics when they showed that two sheets of graphene twisted at specific angles display two emergent phases of matter. After a careful review of the experimental data researchers say that the insulating behavior of the ''magic-angle'' graphene is not Mott insulation, but something even more profound -- a Wigner crystal.
How fruits got their eye-catching colors
Mon, 24 Sep 2018 17:44:52 EDT
New evidence supports the idea that plants owe their rainbow of fruit colors to the different animals that eat them. Researchers first had to get past the fact that most animals don't see colors quite the way humans do.