Study reveals rapid evolution and global spread of Pseudomonas aeruginosa

Source: Pixabay/CC0 Public Domain Pseudomonas aeruginosa, an environmental bacterium that can cause devastating multi-drug-resistant infections, particularly in people with underlying lung conditions, has rapidly evolved and subsequently spread across the globe over the past 200 years, likely driven by changes in human behavior, a new study finds. The work appears in the magazine Science. P. … Read more

Recovery of unique geological samples sheds light on the formation of the current Antarctic ice sheet

Rendered image of the landing of the MARUM-MeBo70 on the seabed of the Amundsen Sea. Credit: MARUM – Center for Marine Environmental Sciences, University of Bremen / Martin Künsting In recent years, global warming has left its mark on the Antarctic ice caps. The “eternal” ice in Antarctica is melting faster than previously assumed, especially … Read more

A concentrated beam of particles and photons could push us toward Proxima Centauri

Illustration of the diffraction problems with particle-photon beams, and how a “self-guided” combined beam continues to provide pushing force even to distant probes. Credit: Limbach & Hara Getting to Proxima Centauri b will require a lot of new technologies, but there are increasingly exciting reasons to do so. Both public and private efforts have been … Read more

Nova burst of V1716 Sco investigated with X-rays and gamma rays

Light curve of nova V1716 Sco observed with NICER with epochs of 10 seconds, from July 25, 2023 to August 30, 2023. Source: Wang et al., 2024. Astronomers from China and Taiwan have observed the nova outburst of V1716 Sco that occurred last year using several X-ray and gamma-ray space observatories. Results of the observation … Read more

A new blue: Mysterious origin of stingray’s electric blue spots revealed

Blue-spotted ribbontail ray. Credit: Morgan Bennet Smith Researchers have discovered the unique nanostructures responsible for the electric blue spots of the blue-spotted ribbontail ray (Taeniura lymma), with potential applications for developing chemical-free coloration. The team also has ongoing research into the equally enigmatic blue coloration of the blue shark (Prionace glauca). This research, titled “Ribbontail … Read more

New organic molecule breaks records in phosphorescence efficiency, paving the way for rare-metal-free applications

Chemical structure of the molecule and photos of phosphorescence taken under UV irradiation. Credit: Osaka University A research team led by Osaka University found that the new organic molecule thienyldiketone exhibits high-efficiency phosphorescence. It achieved phosphorescence more than ten times faster than traditional materials, allowing the team to clarify this mechanism. The article was published … Read more

Physicists develop method to detect single atomic defects in semiconductors

Michigan State University combined terahertz laser light, shown as a red wavy arrow, with a scanning tunneling microscope, or STM, tip — the dark pyramid shape that exchanges a red electron with a sample shown with a blue surface. Credit: Eve Ammerman One of the challenges of cramming smarter, more powerful electronics into ever-shrinking devices … Read more

Searching for dark matter with the coldest quantum detectors in the world

The experiment takes place at about one 10,000th of a degree above absolute zero in a special refrigerator; Dr Autti (right). Credit: Lancaster University One of science’s greatest mysteries may be one step closer to being solved. About 80% of the matter in the universe is dark, meaning it can’t be seen. In fact, dark … Read more

New theory reveals fracture mechanism in soft materials

Schematic representation of the surface instability considered, with the reference and the real configurations, and with a detailed description of the nature of the boundary conditions. Source: Physical assessment letters (2024). DOI: 10.1103/PhysRevLett.132.248202 A new theory has finally deciphered the physical mechanisms of fracture in soft materials. This discovery could soon lead to new, defect-free … Read more

Why Do You Keep Your House So Cold? Research Suggests Your Childhood Temperature May Predict Your Adult Child’s Thermostat Settings

Source: Pixabay/CC0 Public Domain Childhood temperatures and community connectedness can help predict how U.S. residents set their thermostats, offering new ways to promote energy conservation and combat climate change, according to a study published July 3 in the journal PLOS Climate by Dritjon Gruda of the National University of Ireland Maynooth and Paul Hanges of … Read more