Scientists are taking a closer look at aerosol formation involving an organic compound -- called limonene -- that provides the pleasant smell of cleaning products and air fresheners. This research will help to determine what byproducts these sweet-smelling compounds are adding to the air while we are using them to remove germs and odors.
Two major genetic studies of autism, involving more than 50 laboratories worldwide, have newly implicated dozens of genes in the disorder. The research shows that rare mutations in these genes affect communication networks in the brain and compromise fundamental biological mechanisms that govern whether, when, and how genes are activated overall.
Scientists have detected a streamer of dust and gas flowing from a massive outer disk toward the inner reaches of a binary star system. This never-before-seen feature may be responsible for sustaining a second, smaller disk of planet-forming material that otherwise would have disappeared long ago.
Scores of autoimmune diseases afflicting one in 12 Americans -- ranging from type 1 diabetes, to multiple sclerosis (MS), to rheumatoid arthritis, to asthma -- mysteriously cause the immune system to harm tissues within our own bodies. Show More Summary
According to one estimate, 63 per cent of men and 54 per cent of women are in their current long-term relationships because their current partner "poached" them from a previous partner. Now researchers in the US and Australia have conducted...Show More Summary
Mimicking natural evolution in a test tube, scientists have devised an enzyme with a unique property that might have been crucial to the origin of life on Earth.
Laboratory contaminants likely explain the results of a recent study claiming that complete genes can pass from foods we eat into our blood, according to a molecular biologist who re-examined data from the controversial research pap...
Boron isotope patterns preserved in cap carbonates deposited in the aftermath of the younger Cryogenian (Marinoan, ca. 635 Ma) glaciation confirm a temporary ocean acidification event on the continental margin of the southern Congo craton, Namibia. Show More Summary
Many factors, both genetic and environmental, have been blamed for increasing the risk of a diagnosis of schizophrenia. Some, such as a family history of schizophrenia, are widely accepted. Others, such as infection with Toxoplasma gondii, a parasite transmitted by soil, undercooked meat and cat feces, are still viewed with skepticism. Show More Summary
Researchers have described a new system that integrates a laser-ablation propulsion system with the gas blasting nozzles of a spacecraft which can increase the speed of the gas flow out of the system to supersonic speeds while reducing the amount of burned fuel.
A new study asks an important question: after decades of use and study, can we definitely show that remote interventions improve psychosocial outcomes in cancer survivors, or might there be a required, in-person component of these interventions?
A multidisciplinary engineering team developed a new nanoparticle-based material for concentrating solar power plants designed to absorb and convert to heat more than 90 percent of the sunlight it captures. The new material can also withstand temperatures greater than 700 degrees Celsius and survive many years outdoors in spite of exposure to air and humidity.
Walking workstations can improve not only physical, but also mental health during the workday, a new study has found. With growing concerns regarding obesity in the United States, the author hopes the study encourages employers to examine methods to assist workers in in healthy living.
In a darkened, hangar-like space inside MIT's Building 41, a small, Roomba-like robot is trying to make up its mind. Standing in its path is an obstacle — a human pedestrian who’s pacing back and forth. To get to the other side of the...Show More Summary
A study, performed with fruit flies, describes a gene that determines whether a specialized cell conserves the capacity to become a stem cell again. Unveiling the genetic traits that favor the retention of stem cell properties is crucial for regenerative medicine.
Meiosis is the two-step series of cell divisions that make sexual reproduction and genetic diversity possible. Researchers have now dived into the process of meiosis in specific plant species and revealed that these plants display an inversion of the standard meiotic phases.
Toxicologists have evaluated several thousand studies on the risks associated with nanoparticles and discovered no end of shortcomings: poorly prepared experiments and results that don't carry any clout. Scientists are now developing new standards for such experiments within an international network.
An overwhelming number of chemicals from household and industrial products are in the environment -- and hundreds are in our bodies. But for most of them, scientists have yet to determine whether they cause health problems. Now they've taken the first step toward doing that by estimating which substances people are exposed to the most.
Plants rely on sunlight to make their food, but they also need protection from its harmful rays, just like humans do. Recently, scientists discovered a group of molecules in plants that shields them from sun damage. Now scientists report on the mechanics of how these natural plant sunscreens work.
With fears growing over chemical and biological weapons falling into the wrong hands, scientists are developing microrockets to fight back against these dangerous agents, should the need arise. They have developed new spherical micromotors that rapidly neutralize chemical and biological agents and use water as fuel.