Category: 未分类

With $860K in Navy funding, MSU psychologists are developing tools to spot people who can handle complex tasks under pressure. The key? Mastering “placekeeping” staying focused and accurate even when sleep-deprived or interrupted.

As electric vehicles grow more popular, their warning sounds may not be doing enough to protect pedestrians. A Swedish study shows that these signals are hard to locate, especially when multiple vehicles are involved, leaving people unable to tell where danger is coming from or how many cars are nearby.

New research is shaking up our understanding of evolution by revealing that some species may not evolve gradually at all. Instead, scientists discovered that certain marine worms experienced an explosive genetic makeover when they transitioned to life on land over 200 million years ago. Their entire genome broke into pieces and was randomly reassembled an event so extreme it stunned researchers. This radical shift supports the theory of “punctuated equilibrium,” where species remain unchanged for ages and then suddenly leap forward.

A breakthrough study has uncovered that the Southern Ocean’s power to pull carbon dioxide from the atmosphere fluctuates dramatically depending on winter sea ice. When sea ice lingers longer into winter, the ocean absorbs up to 20% more CO2, thanks to a protective effect that blocks turbulent winds from stirring up deeper, carbon-loaded waters. This subtle seasonal shield plays a vital role in buffering our planet against climate change. But here s the twist: winter data from the Southern Ocean is notoriously scarce due to its brutal conditions, meaning we might be missing a key piece of Earth s climate puzzle.

Astronomers have produced the most detailed map yet of the Sculptor Galaxy, revealing hundreds of previously unseen celestial features in stunning color and resolution. By combining over 50 hours of observations using the European Southern Observatory s Very Large Telescope, scientists captured a full-spectrum portrait that unravels the galaxy s stellar makeup in thousands of colors. This revolutionary technique offers an unprecedented look at the age, composition, and motion of stars and gas across the galaxy s vast 65,000-light-year span. Among the highlights are 500 newly identified planetary nebulae, glowing remnants of dying stars, which help pinpoint the galaxy s distance and open new windows into galactic evolution.

Imagine diagnosing Parkinson s disease not with pricey scans or subjective checklists, but with a simple ear swab. Scientists in China have developed a promising early screening method that detects Parkinson s from subtle changes in the scent of ear wax yes, really. By analyzing specific volatile compounds in ear wax and feeding that data into an AI-powered olfactory system, they achieved 94% accuracy in identifying who had the disease. If expanded successfully, this low-cost, non-invasive technique could transform early detection and treatment of this debilitating neurological disorder.

Every query typed into a large language model (LLM), such as ChatGPT, requires energy and produces CO2 emissions. Emissions, however, depend on the model, the subject matter, and the user. Researchers have now compared 14 models and found that complex answers cause more emissions than simple answers, and that models that provide more accurate answers produce more emissions. Users can, however, to an extent, control the amount of CO2 emissions caused by AI by adjusting their personal use of the technology, the researchers said.

Researchers investigating the enigmatic and antibiotic-resistant Pandoraea bacteria have uncovered a surprising twist: these pathogens don’t just pose risks they also produce powerful natural compounds. By studying a newly discovered gene cluster called pan, scientists identified two novel molecules Pandorabactin A and B that allow the bacteria to steal iron from their environment, giving them a survival edge in iron-poor places like the human body. These molecules also sabotage rival bacteria by starving them of iron, potentially reshaping microbial communities in diseases like cystic fibrosis.

Astronomers have uncovered a colossal, searing-hot filament of gas linking four galaxy clusters in the Shapley Supercluster a discovery that could finally solve the mystery of the Universe s missing matter. This giant thread, 10 times the mass of the Milky Way and stretching 23 million light-years, is one of the best confirmations yet of what cosmological simulations have long predicted: that vast, faint filaments connect the Universe s largest structures in a cosmic web.

Gaia, Europe’s Milky Way–mapping spacecraft, shut down earlier this year. It was arguably the most important—and most overlooked—astronomy project of the 21st century