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Phys.org / Elementary school teachers report increased student hunger and anxiety after universal free school meals ended
A recent study published in the Journal of Nutrition Education and Behavior explored elementary school teachers' experiences before and after the end of the federal universal free school meals (UFSM) policy. Researchers found ...
Phys.org / Diamond clock combines two signals to cut temperature-driven drift
Despite all the advertisements for engagement rings and necklace gifts, natural diamonds are imperfect. Their carbon atoms are arranged in a cubic lattice, but they nonetheless contain several types of crystallographic defects ...
Phys.org / Tiny mirror that controls light in 3D could make microscopes smaller and faster
Researchers use tightly focused laser beams to image biological samples, shape materials with microscopic precision and generate displays. But using those beams in three dimensions requires more than sweeping light from side ...
Phys.org / A roadmap for animal-free chemical testing
For many years, the European Union has pursued a policy aimed at the replacement, reduction and refinement of animal testing (the 3Rs principle). To put the ethical principle of the 3Rs into practice, the European Commission ...
Medical Xpress / Widely used back braces lack strong evidence for chronic low back pain
A new Cochrane review finds very low-quality evidence on lumbar supports for chronic low back pain, meaning that no strong recommendations can be made either for or against their use. Lumbar supports are inexpensive back ...
Phys.org / Loss of kelp forests reverberates down to the microbial level
As one moves north, Maine's kelp forests are being overtaken by dense mats of carpet-like turf algae. The steady decline of kelp and transition into this new state are altering the ecosystem all the way down to the microbial ...
Medical Xpress / Special aspherical glasses slow down childhood myopia progression, two-year trial finds
The number of people who need prescription glasses to correct their vision is increasing each year as nearsightedness, or myopia, becomes more common worldwide. Current projections suggest cases could reach 50% by 2050, affecting ...
Tech Xplore / New analysis reveals unexpected vulnerabilities in power grids and other cyber-physical networks
If you wanted to take down a power grid or a network of drones, which part of the system should you attack? Researchers at The University of New Mexico School of Engineering posed the question in hopes of developing better ...
Phys.org / Why some AI ads fail while others succeed
Artificial intelligence can create realistic depictions of just about anything, but that does not mean advertisers should lean on the technology, according to a study led by University of Mississippi professors.
Phys.org / A sustainable flame retardant derived from corn steep liquor
Certain phosphorus compounds are highly effective at suppressing fires, which is why they are widely used in flame retardants. Phosphorus, however, is a finite resource. Estimates suggest it could be depleted within the next ...
Phys.org / Organic crystal reveals how Joule heating stabilizes resistive switching
Metal-insulator transitions (MITs), in which a material changes from a metallic state with low resistivity to an insulating state because of a change in an external parameter, such as temperature, pressure or an electric ...
Medical Xpress / Scientists uncover microbiome signaling system that could open new paths for IBS-related constipation
Mayo Clinic researchers have discovered that chemical signals produced by gut bacteria work together to control intestinal movement. One bacterial signal helps set the intestines in motion, while another primes gut cells ...
