- PhysOrg
- 21/3/2 22:16
Scientists regularly use remote sensing drones and satellites to record how climate change affects permafrost thaw rates—methods that work well in barren tundra landscapes where there's nothing to obstruct the view.
Scientists regularly use remote sensing drones and satellites to record how climate change affects permafrost thaw rates—methods that work well in barren tundra landscapes where there's nothing to obstruct the view.
Today, we can say without a shadow of doubt that an alternative to fossil fuels is needed. Fossil fuels are not only non-renewable sources of energy but also among the leading causes of global warming and air pollution. Thus, many scientists worldwide have their hopes placed on what they regard as the fuel of tomorrow: hydrogen (H2). Although H2 is a clean fuel with incredibly high energy density,...
Powerful insecticides are turning up in deer in nearly every corner of Minnesota, raising concerns that the ubiquitous chemicals may be keeping fawns from surviving to maturity or harming deer reproduction.
Finding innovative and sustainable solutions to our material needs is one of the core objectives of green chemistry. The myriad plastics that envelop our daily life—from mattresses to food and cars—are mostly made from oil-based monomers which are the building blocks of polymers. Therefore, finding bio-based monomers for polymer synthesis is attractive to achieve more sustainable solutions in...
Pesticides used in forestry may threaten species in downstream rivers and estuaries, but little is known about the extent to which this occurs. A new study by researchers at Portland State University found mussels, clams and oysters in watersheds along the Oregon Coast are exposed to pesticides used in managing forests. The results of this study, published in the journal Toxics, have implications...
College course syllabi written in a warm, friendly tone are more likely to encourage students to reach out when they are struggling or need help, a new study from Oregon State University found.
The United States experiences more tornadoes than any other country, with a season that peaks in spring or summer depending on the region. Tornadoes are often deadly, especially in places where buildings can't withstand high winds.
Even before the COVID-19 pandemic, college students were reporting record levels of stress and anxiety. According to the American College Health Association Fall 2018 National College Health Assessment, 63% of U.S. college students experienced overwhelming anxiety throughout the year. Plus, stress can impact students' academic performance, and students with higher stress levels are more at-risk of...
If you drive south through central Utah on Interstate 15 and look west somewhere around Fillmore, you'll see smooth hills and fields of black rock. The area is, aptly, named the Black Rock Desert. It may not look like much, but you're looking at some of Utah's volcanoes.
The coronavirus pandemic has drawn new attention to the digital divide, as the need for online schooling and working from home has disproportionately hurt those without computer equipment and skills.
Powerful and deadly, the bite of a trap-jaw ant is renowned throughout the animal kingdom. Unlike normal gripping jaws, which rely on muscles to open and close, the trap-jaw latches itself open, storing energy like a stretched spring. When released, the jaws of the ansnap shut on their prey in one ultrafast strike.
Global energy-related carbon dioxide emissions rose slightly in December compared with the same month of 2019, indicating the sharp drop seen due to the pandemic was short-lived.
Herbicide-resistant weeds have fueled a growing demand for effective, nonchemical weed controls. Among the techniques used are chaff carts, impact mills and other harvest-time practices that remove or destroy weed seeds instead of leaving them on the field to sprout.
A new study published today in the journal Geophysical Research Letters used NASA's ice-measuring laser satellite to identify atmospheric river storms as a key driver of increased snowfall in West Antarctica during the 2019 austral winter.
Advances in hydraulic fracturing technology have enabled discovery of large reserves of natural gas which primarily contains methane, and which is mainly burned directly, potentially causing global warming. Upgrading methane to greener energy such as methanol through aerobic oxidation is an ideal way to solve the problem.
Recently, the Laboratory of Micro and Nano Engineering, School of Engineering Science, University of Science and Technology of China (USTC) has made important progress in the field of structural chirality detection research using vortex light, and found that photon orbital angular momentum can efficiently detect the optical chiral signal of structures.
Aqueous free-radical precipitation polymerization is one of the most useful methods to prepare uniformly sized hydrogel microspheres (microgels), and an understanding of the polymerization mechanism is crucial to control the structure or physicochemical properties of microgels. However, the details of the mechanism of precipitation polymerization remain unclear.
Advances in wearable devices have enabled e-textiles, which fuse lightweight and comfortable textiles with smart electronics, and are garnering attention as the next-generation wearable technology. In particular, fiber electronic devices endowed with electrical properties, while retaining the specific characteristics of textiles, are key elements in manufacturing e-textiles.
If you're looking for an indoor space with a low level of particulate air pollution, a commercial airliner flying at cruising altitude may be your best option. A newly reported study of air quality in indoor spaces such as stores, restaurants, offices, public transportation—and commercial jets—shows aircraft cabins with the lowest levels of tiny aerosol particles.
Vaccines are an important tool in fighting porcine reproductive and respiratory syndrome (PRRS), but the fast-mutating virus that causes the disease sometimes requires the production of autogenous vaccines tailored to particular variants.
There's more to taste than flavor. Let ice cream melt, and the next time you take it out of the freezer you'll find its texture icy instead of the smooth, creamy confection you're used to. Though its flavor hasn't changed, most people would agree the dessert is less appetizing.
Resveratrol is a plant compound found primarily in red grapes and Japanese knotweed. Its synthetic variant has been approved as a food ingredient in the EU since 2016. At least in cell-based test systems, the substance has anti-inflammatory properties. A recent collaborative study by the Leibniz Institute for Food Systems Biology at the Technical University of Munich and the Institute of...
By modeling wolves in Yellowstone National Park, researchers have discovered that how a population is organized into social groups affects the spread of infectious diseases within the population. The findings may be applicable to any social species and could be useful in the protection of endangered species that suffer from disease invasion.
Optomechanical microcavities are extremely small structures with diameters of less than 10 micrometers (about a tenth of a human hair) inside which light and mechanical vibrations are confined. Thanks to their small size and to efficient microfabrication techniques that enable them to hold intense light energy and interact with mechanical waves, microcavities can be used as mass and acceleration...
In a recent collaborative study led by the University of Maryland (UMD), researchers find that consumers tend to buy something less fuel efficient than they normally would for their second car after springing for an eco-friendly vehicle. While this sounds like an all-too-logical conclusion, the study reports a 57% reduction in the benefits of driving your fuel efficient car for carbon emissions...