Updated: 43 min 40 sec ago
Globally averaged concentration of carbon dioxide in the atmosphere reached the symbolic and significant milestone of 400 parts per million for the first time in 2015 and surged again to new records in 2016 on the back of the very powerful El Niño event, according to the World Meteorological Organization's annual Greenhouse Gas Bulletin.
Directed motion seems simple to us, but the coordinated interplay of complex processes is needed, even for seemingly simple crawling motions of worms or snails. By using a gel that periodically swells and shrinks, researchers developed a model for the waves of muscular contraction and relaxation involved in crawling. They were able to produce two types of crawling motion by using inhomogeneous irradiation.
A new publication on the bird-like dinosaur Avimimus, from the late-Cretaceous suggests they were gregarious, social animals -- evidence that flies in the face of the long-held mysticism surrounding dinosaurs as solo creatures.
One expert has focused her academic career on the effects and outcomes of children adopted by same-sex couples. It is believed hers is the first study that has followed children adopted by lesbian, gay and heterosexual parents from early to middle childhood.
Visual hallucinations ... everyone has heard of them, and many people have experienced the sensation of "seeing" something that isn't there. But studying the phenomenon of hallucinations is difficult: they are irregular, transitory, and highly personal -- only the person experiencing the hallucination knows what he or she is seeing, and representations of what's being seen are limited to verbal descriptions or drawings.
Computer simulations by astrophysicists of the formation of planets orbiting in the habitable zone of low mass stars such as Proxima Centauri show that these planets are most likely to be roughly the size of the Earth and to contain large amounts of water.
The risk of developing a psychotic disorder such as schizophrenia is highest for young people, men, ethnic minorities and people living in urban areas and poorer neighborhoods, an English study concludes.
First year data on the effectiveness of a new care model has been published. The work follows a three-step evaluation and management plan from clinicians in Geriatrics, Neuropsychology and Neurology, examines patients referred for evaluation of cognitive complaints based on activities of daily living, demographic information, co-morbid conditions, and medication review.
A molecular motor that controls the release of inflammatory factors that cause severe and fatal allergic reactions has now been identified by researchers. The study suggests that targeting this motor may be a new way to treat patients undergoing anaphylactic shock.
With 40 percent of opioid medications in Michigan prescribed by surgeons, a team has launched an effort to encourage safer prescribing across the state, and a map of drug takeback locations.
Researchers have found measurable brain changes in children after a single season of playing youth football, even without a concussion diagnosis, according to a new study.
Along with many spiders, pseudoscorpions, and flies discovered and catalogued by the cave explorers, a tiny threadlike millipede was found in the unexplored dark marble caves in Sequoia National Park.
A new study describes a method for detecting people dishonestly posting online comments, reviews or tweets across multiple accounts, a practice known as “astroturfing.”
Experts have succeeded in the development of flexible optical design method for superconducting nanowire single-photon detectors (SSPDs or SNSPDs). This technique enables SSPDs with a broadband high detection efficiency reject a specific wavelength, and is effective for multidisciplinary applications in fields such as the quantum cryptography, fluorescence spectroscopy, and remote sensing that require high efficiency over a precise spectral range and strong signal rejection at other wavelengths.
Environmental contaminants such as PFASs can be transferred from mother to offspring through the placenta and mother's milk, exposing the young mammal before and after birth. PFASs are a family of human-made chemicals, which have been used in a number of consumer products such as textiles, carpets, paper plates and food packaging because they repel grease, water and stains and are heat resistant. Since it was discovered that they pose a risk to wildlife and human health, some PFASs have been phased out of use, but they have not been universally banned.
One of the earliest widespread applications of precision medicine in cancer care is helping patients and physicians decide whether chemotherapy is needed, a new study finds.
One of the most detailed genomic studies of any ecosystem to date has revealed an underground world of stunning microbial diversity, and added dozens of new branches to the tree of life. The bacterial bonanza comes from scientists who reconstructed the genomes of more than 2,500 microbes from sediment and groundwater samples collected at an aquifer in Colorado.
Expanding the role of hospitalist physician assistants achieves similar clinical outcomes, costs less
More and more medical centers are relying on hospitalists -- hospital-based internal medicine specialists who coordinate the complex care of inpatients. Now, an 18-month study comparing two hospitalist groups -- one with a high physician assistant (PA)-to-physician ratio ("expanded PA") and one with a low PA-to-physician ratio ("conventional") -- has found no significant differences in key clinical outcomes achieved by both groups.
It’s been long thought that when blood transfusions are needed, it may be best to use the freshest blood, but researchers have led a large international study proving that it is not so.
Pumped-storage hydroelectricity systems are to be found throughout the world, but always on a large scale. Researchers investigated whether energy storage via pumped hydro systems is possible on a very small scale, in particular in buildings. They used the Goudemand apartment building in Arras in France as their case study.