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Phys.org / Quantum trembling: Why there are no truly flat molecules

Traditional chemistry textbooks present a tidy picture: Atoms in molecules occupy fixed positions, connected by rigid rods. A molecule such as formic acid (methanoic acid, HCOOH) is imagined as two-dimensional—flat as a ...

17 hours ago in Physics
Phys.org / Cleaner fish show intelligence typical of mammals

Researchers at Osaka Metropolitan University in Japan have discovered a previously undiscovered behavior in cleaner wrasse (Labroides dimidiatus). When presented with a mirror, the tiny fish not only recognized themselves, ...

18 hours ago in Biology
Medical Xpress / Invisible harms: Drug-related deaths spike after hurricanes and tropical storms

Tropical cyclones, including hurricanes and tropical storms, are linked to increased rates of drug-related deaths up to three months after the storm passes—particularly in higher-income, white communities and among younger ...

16 hours ago in Health
Medical Xpress / The skinny on fat: 'How to eat to avoid chronic diseases'

This is the first celebration of Heart Month (it comes every February) since the release of the updated dietary guidelines for Americans. The new recommendations are meant to represent the most current scientific evidence ...

9 hours ago in Health
Phys.org / What is a 'seesaw protein' that switches functions by changing shape?

Inspired by the simple mechanism of a seesaw—when one side goes up, the other side goes down—researchers asked an intriguing question: Could a single molecule switch between two different roles like a seesaw? This idea ...

9 hours ago in Biology
Phys.org / Americium, curium and californium—crystallizing the rarest elements

Actinides are a group of heavy, radioactive elements that include uranium, plutonium, americium, curium, berkelium and californium. Understanding how these elements bond with other atoms (known as coordination chemistry), ...

17 hours ago in Chemistry
Phys.org / How do clouds form in Antarctica? The first flight-based aerosol measurements in 20 years

Antarctica plays a crucial role in Earth's climate system by reflecting solar radiation back into space. The large white ice surfaces and clouds play a decisive role in this process. However, how clouds actually form in Antarctica, ...

10 hours ago in Earth
Phys.org / Phonon lasers unlock ultrabroadband acoustic frequency combs

Acoustic frequency combs organize sound or mechanical vibrations into a series of evenly spaced frequencies, much like the teeth on a comb. They are the acoustic counterparts of optical frequency combs, which consist of equally ...

18 hours ago in Physics
Medical Xpress / Anxiety and depression are widespread in adults with disabilities. What the data show

Adults with intellectual and developmental disabilities, such as autism and Down syndrome, experience substantially higher rates of anxiety and depression than the general population of adults, researchers report in JAMA ...

16 hours ago in Psychology & Psychiatry
Tech Xplore / Pinpointing direction in noisy 2D data: New algorithm could improve imaging, AI, particle research and more

A University of Hawaiʻi at Mānoa student-led team has developed a new algorithm to help scientists determine direction in complex two-dimensional (2D) data, with potential applications ranging from particle physics to machine ...

17 hours ago in Computer Sciences
Phys.org / Endangered marine life is being caught in fishing nets, but it doesn't need to be

Hundreds of thousands of marine animals are killed every year after becoming accidentally caught in commercial fishing nets. Sharks, skates and rays are at particular risk, alongside turtles, seals, whales and dolphins, many ...

10 hours ago in Biology
Medical Xpress / Dental guidelines call for more judicious use of X-rays

Everyone who's had regular dental care knows the heavy lead apron that's draped across your body before taking X-rays of your teeth.

10 hours ago in Dentistry