Contrast agents are compounds routinely used in clinical analysis to enhance differentiation between tissues or to increase the visibility of structures or fluids within the body, thus facilitating medical diagnosis. A study led by researcher Lucia Cardo and Ikerbasque research
On the shores of Lake Eyasi in northern Tanzania, a small number of people still hunt and gather their food. Today, a Hadza hunter has taken down an animal—a kudu. He can't carry it by himself, so he cuts his poisoned arrow from its flank, covers the carcass in dry grass to
Researchers at the University of Galway in Ireland have found that venomous snakes are significantly more likely than nonvenomous species to have colors that stand out against their natural surroundings.
Most people find some sounds unpleasant, such as a baby crying or a siren, because of features such as their pitch, frequency or loudness. However, for some people, very ordinary sounds, such as chewing, sniffing, breathing, swallowing, finger tapping or clicking a pen, can
At some point, most of us have heard the same advice about work: find a job you love, and you'll never work a day in your life. The idea of a "dream job" sounds inspiring, even noble; it suggests that work can be a source of meaning, identity and personal fulfillment. But this
Old age is often associated with reliance on others, loss of independence and inactivity. But these simplistic notions mask the diversity of people's experiences as they age, and can also lead to unsuitable policies and interventions—or even to explicit forms of ageism.
Scientists found that prolonged fasting triggers major changes throughout the body, but many of the most interesting effects only appeared after about three days without food. The results suggest fasting may influence health in ways that go beyond weight loss and could
A Monash University study analyzed data from the Australian Bureau of Statistics' 2020–2022 National Study of Mental Health and Wellbeing and found more than half of cisgender nonheterosexual Australians and more than one-third of transgender Australians are diagnosed with a
Stimulating the vagus nerve after practice helped mice develop stronger long-term motor learning, revealing a potentially important window when the brain is still locking in a new skill. The effect was linked to rhythmic changes in brain blood vessels, hinting that
Many complex quantum systems rapidly lose the recognizable patterns of their initial states as their components interact. To describe patterns of regular and chaotic motion in specific systems, physicists can construct a mathematical map called an effective phase space.
October skywatchers can see Saturn at opposition, catch meteors from Halley’s Comet during the Orionid peak, and watch the Moon sweep past the famous Pleiades star cluster. Moonlight may obscure some Orionids, but the best viewing should come before dawn after the Moon sets.
Scientists have discovered evidence of altermagnetism in a thin, highly tunable material that could help electronics use electron spin instead of relying only on electrical charge. The unusual magnetic state may enable faster, more energy-efficient devices without the unwanted
A new nanoparticle therapy reduced lung tumors in mice while also targeting cachexia, the severe muscle wasting that can accompany cancer. By delivering follistatin mRNA directly to tumors, the approach could eventually offer a way to fight both the disease and one of its most
The Nobel Prize in medicine was awarded Monday to U.S. psychiatrist and neurologist Karl Deisseroth and German scientists Peter Hegemann and Georg Nagel for their pioneering work in the neuroscience field of optogenetics.
Scientists have discovered a human gene with a remarkable double life: it appears to play an important role in brain cells while still retaining the ability to jump around the genome. Called BC200, the gene evolved millions of years ago from a mobile piece of DNA known as a
An El Niño–driven ocean surge threatens coastal flooding, researchers warn that a plan to loosen vaccine requirements will increase measles risks in Florida, and experts debunk a viral TikTok cold remedy
Karl Deisseroth, Georg Nagel and Peter Hegemann developed optogenetics, which uses light and genetics to control individual cells
Cancer immunotherapy can lose its punch when tumor-fighting T cells become exhausted, but researchers may have found a way to keep them going longer. Scientists at Memorial Sloan Kettering Cancer Center identified a signaling molecule called MEK that can push T cells to burn
The truth is out there—but identifying signs of life in space involves an intense search for biosignatures within our solar system and beyond. However, developing sensitive yet compact technologies capable of detection has proven to be an out-of-this-world challenge.
Extreme heat is putting pregnant mothers and their newborns at increasing risk, United Nations climate chief Simon Stiell will warn on Monday.
Research into hormones that regulate appetite is on everybody's lips for the Nobel medicine prize, to be announced on Monday when the 2026 Nobel season kicks off.
The sun had barely risen, but diving volunteer Elizaveta Bodrova was already raring to plunge into the cold waters of Lake Issyk-Kul, where the ruins of a once-thriving city have lain submerged for centuries.
NASA has selected the GIMLI project to investigate whether the Marius Hill Pit opens into a vast underground cave or lava tube. Using radar, seismic sensors, gravity measurements, and cameras, researchers will search beneath the lunar surface and estimate the size of any hidden
Over 500 years before the building of the Great Pyramid in Egypt, First Dynasty kings were buried in a tomb surrounded by many burials of household officials and artisans—many of which seem to have taken place at the same time, a suspiciously high number of simultaneous deaths.
Scientists have discovered that E-cadherin, a protein best known as the “glue” holding cells and tissues together, has a surprising second job: helping epithelial cells swallow nearby dead cells. Using live zebrafish and mouse embryos, researchers found that cells can
Researchers found that just 20 minutes of comfortable walking can rapidly stimulate the gut. Within one to two minutes after exercise, bowel sounds became stronger, more frequent, and lasted longer, suggesting increased intestinal movement. The boost was brief, fading within a
In front of most Australian houses, between the sidewalk and the road, runs a strip of land most people never really think about. In Australia, it's called the nature strip, but it goes by other names in other regions, including a verge, parkway or tree lawn.
A region of Antarctica with some of the greatest potential to reshape the natural world and human society is also the least scientifically understood and explored.
Recently, spatial omics has become a powerful tool, enabling researchers to see not only what molecules are present in a tissue, but also where they are located and how they are organized across cells, tissue structures and local microenvironments. This spatial context has
A systematic review of informal businesses published in the International Journal of Entrepreneurship and Small Business argues that they should be treated as part of the larger entrepreneurial ecosystem rather than as a peripheral feature of the economy.
If you've ever felt overwhelmed by menu options at a restaurant, cereal varieties at the grocery store or potential partners while scrolling through dating apps, you've experienced choice overload.
Dark matter could be a type of matter in the universe that does not emit, absorb or reflect detectable light and appears to interact very weakly with regular matter. Although physicists have observed gravitational effects attributed to dark matter, they have not yet been able
Students in a new study were neither clearly positive nor negative about more climate-friendly school meals. Whether the food tasted good, was filling and felt familiar played an important role. Students were somewhat more positive about reducing the amount of meat in recipes
When you swim through the azure waters of the Great Barrier Reef, there is one creature on the seafloor that's almost impossible to miss: the giant clam. Its huge, fluted shell frames a soft mantle shimmering with electric blue, green and gold.
A new study says yes The post Was There Really a Female King in Ancient Egypt 5,000 Years Ago? appeared first on Nautilus .
An international team of astronomers, including researchers from the Department of Physics and the Hong Kong Institute for Astronomy and Astrophysics (HKIAA) at The University of Hong Kong (HKU), has discovered a previously hidden phase of high-energy activity following the
As Ted Schuur stepped along the edges of Smith Lake, a bubble surfaced from the muck underfoot. And then another. They're bubbles of methane, a potent heat-trapping gas made from decomposing plants and animals that had once been stuck in Alaska's frigid permafrost. But that
Saturn's icy moon Enceladus hides a global ocean beneath its frozen surface. From fractures near its south pole, material from this ocean is ejected into space as a plume of water vapor and ice particles. These particles offer scientists a rare opportunity to investigate an
A landscape painted by rocks, wind, and water The post Coral Reef-Like Rock Layers on Mars Reveal Ancient Climate Secrets appeared first on Nautilus .
The U.S. prison population is declining at an accelerating rate, and prison admission rates are predicted to fall an additional 50% within the next two decades, according to new research from University at Albany professor Shawn Bushway.
