General Physics
Scientists observe 'negative time' in quantum experiments
Scientists have long known that light can sometimes appear to exit a material before entering it—an effect dismissed as an illusion caused by how waves are distorted by matter.
17 hours ago
7
1330
Evolution
The genomic journey of modern and archaic humans may be older than we thought
Research conducted at the Department of Biology, University of Padova, has identified critical genomic milestones in the evolution of Homo sapiens, including key chromosomal rearrangements and specific gene variants that ...
15 hours ago
0
197
Lab work digs into gullies seen on giant asteroid Vesta by NASA's Dawn
Pocked with craters, the surfaces of many celestial bodies in our solar system provide clear evidence of a 4.6-billion-year battering by meteoroids and other space debris. But on some worlds, including the giant asteroid ...
Planetary Sciences
19 hours ago
0
50
Dark energy 'doesn't exist' so can't be pushing 'lumpy' universe apart, physicists say
One of the biggest mysteries in science—dark energy—doesn't actually exist, according to researchers looking to solve the riddle of how the universe is expanding.
Astronomy
Dec 20, 2024
14
590
Latest gravitational wave observations conflict with expectations from stellar models
Almost 300 binary mergers have been detected so far, indicated by their passing gravitational waves. These measurements from the world's gravitational wave observatories put constraints on the masses and spins of the merging ...
Team presents first demonstration of quantum teleportation over busy internet cables
Northwestern University engineers are the first to successfully demonstrate quantum teleportation over a fiberoptic cable already carrying internet traffic.
Optics & Photonics
Dec 20, 2024
2
120
Robot mimics traditional Chinese massage techniques for therapeutic use
In recent years, roboticists have developed a wide range of systems that could eventually be introduced in health care and assisted living facilities. These include both medical robots and robots designed to provide companionship ...
Study sheds new light on what causes long-term disability after a stroke, offers new path toward possible treatment
A recent study by Simon Fraser University researchers has revealed how an overlooked type of indirect brain damage contributes to ongoing disability after a stroke.
Diseases, Conditions, Syndromes
8 hours ago
0
46
Salt-seeking behavior traced to specific brain neurons
Salt, or more precisely the sodium it contains, is very much a "Goldilocks" nutrient. Low sodium levels cause a drop in blood volume, which can have serious, sometimes deadly, health consequences. Conversely, too much salt ...
Medical research
15 hours ago
0
42
Microscopic cell changes linked to cancer's rapid growth in stiff tissues
In 2022 alone, over 20 million people were diagnosed with cancer, and nearly 10 million died from the disease, according to the World Health Organization. While the reaches of cancer are massive, the answer to more effective ...
Oncology & Cancer
15 hours ago
0
11
The Future is Interdisciplinary
Find out how ACS can accelerate your research to keep up with the discoveries that are pushing us into science’s next frontier
Medical Xpress
Study sheds new light on what causes long-term disability after a stroke, offers new path toward possible treatment
Salt-seeking behavior traced to specific brain neurons
Yoga has many health benefits as you age—but is it also the secret to longevity?
A tropical disease in Switzerland: Call for coordinated action on Chagas disease
International study reveals COVID-19 pandemic's impact on other causes of death
Discovery of norovirus replication hubs offers new antiviral targets
Innovative red blood cell shape test promises better blood storage and transfusions
Studies address what constitutes patience, and impatience, and the factors that determine them
Potential culprit identified in lingering Crohn's disease symptoms
Norovirus sickens hundreds on three cruise ships: CDC
AI tool analyzes medical charts for ADHD follow-up care
Tech Xplore
Open-source platform provides a virtual playground for human-AI teaming
Fake credentials offer novel solution to e-voting challenges
US confirms billions in chips funds to Samsung, Texas Instruments
'Dark lull' in German energy transition sparks political debate
Discovery of trimodal energy storage material boosts renewable energy potential
AI system can envision an entire world from a single picture
Laser-based artificial neuron mimics nerve cell functions at lightning speed
AI agents mimic scientific collaboration to generate evidence-driven hypotheses
Commercial tea bags release millions of microplastics, entering human intestinal cells
UAB research has characterized in detail how polymer-based commercial tea bags release millions of nanoplastics and microplastics when infused. The study shows for the first time the capacity of these particles to be absorbed ...
Health
Dec 20, 2024
0
1312
Experimental drug that summons 'warriors of the immune system' shows early promise against non-Hodgkin lymphoma
An investigational therapy is demonstrating preclinical promise against non-Hodgkin lymphoma by boosting natural killer cells and efficiently annihilating the malignancy without toxicity to the patient, a team of cancer biologists ...
Giant sloths and mastodons lived with humans for millennia in the Americas, new discoveries suggest
Sloths weren't always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge—up to 4 tons (3.6 metric tons)—and when startled, they brandished immense claws.
Paleontology & Fossils
Dec 20, 2024
2
265
Thermal evaporation emerges as a promising strategy for scalable solid-state battery production
Solid-state lithium batteries are promising energy storage solutions that utilize solid electrolytes as opposed to the liquid or gel electrolytes found in traditional lithium-ion batteries (LiBs). Compared to LiBs and other ...
Compact on-chip polarimeter measures light polarization with high accuracy
Reliably measuring the polarization state of light is crucial for various technological applications, ranging from optical communication to biomedical imaging. Yet conventional polarimeters are made of bulky components, which ...
Active particles reorganize 3D gels into denser porous structures, study shows
Colloidal gels are complex systems made up of microscopic particles dispersed in a liquid, ultimately producing a semi-solid network. These materials have unique and advantageous properties that can be tuned using external ...
Researchers take 'significant leap forward' with quantum simulation of molecular electron transfer
Researchers at Rice University have made a meaningful advance in the simulation of molecular electron transfer—a fundamental process underpinning countless physical, chemical and biological processes. The study, published ...
General Physics
Dec 20, 2024
0
130
Water and gruel—not bread: Discovering the diet of early Neolithic farmers in Scandinavia
At a Neolithic settlement on the Danish island Funen dating back 5,500 years, archaeologists have discovered both grinding stones and grains from early cereals. However, new research reveals that the inhabitants did not use ...
Archaeology
Dec 20, 2024
0
93
New material for sodium-ion batteries brings affordable, sustainable future within grasp
While lithium-ion batteries have been the go-to technology for everything from smartphones and laptops to electric cars, there are growing concerns about the future because lithium is relatively scarce, expensive and difficult ...
Energy & Green Tech
Dec 20, 2024
0
42
Your black plastic kitchen utensils aren't so toxic after all: But you should still toss them, group says
A recent study that recommended toxic chemicals in black plastic products be immediately thrown away included a math error that significantly overstated the risks of contamination, but its authors are standing by their conclusions ...
Materials Science
Dec 20, 2024
0
103
NASA cameras to capture interaction between Blue Ghost lander, moon's surface
Say cheese again, moon. We're coming in for another close-up.
'You can't hear a smile': How video visits help dads in prison stay connected with their kids
Many Australians know December 21 as "Gravy Day." This is a reference to Paul Kelly's song and new film How to Make Gravy, where a prisoner named Joe writes a letter to his family four days before Christmas. In it Joe, missing ...
The moon might be older than scientists previously thought; a new study shines light on its history
A physicist, a chemist and a mathematician walk into a bar. It sounds like the start of a bad joke, but in my case, it was the start of an idea that could reshape how scientists think about the history of the moon.
Two stars may be orbiting each other near a supermassive black hole in our Milky Way galaxy
Scientists have spotted what appear to be two stars whipping around each other near the supermassive black hole at the center of our Milky Way galaxy.
How can I keep my cat happy? Five tips from a vet to help your feline friend live their best life
Around one third of Australian households live with at least one cat, yet surveys tell us the cats' needs are not being met.
Bottlenose dolphins smile at each other when they play—new study reveals how and why
Dolphins have an irresistible charm for people. They are extremely playful at all ages and often play alone, surfing the waves, leaping into the air, performing flips and striking the water with their tail flukes.
Neutrality has played a pivotal, but under-examined, role in international relations, new research shows
Researchers have developed a new way of understanding international relations by analyzing almost 200 years of alliances, hostilities and neutrality between countries.
Inequality weakens local governance and public satisfaction, study finds
Local governments in developing countries are crucial for providing public services that promote human development and address challenges like extreme weather, unemployment and crumbling infrastructure. Yet, they often face ...
Advanced algorithm reduces errors in land cover classification for landslide analysis
Land use and land cover (LULC) analysis has become increasingly significant in environmental studies due to its direct impact on the environment. Changes in LULC affect the ecological and climatic balance, in addition to ...
Advancing light control: New opportunities for metasurfaces in optoelectronics
A global review of advancements in integrating metasurfaces—thin planar arrays of nanostructures—into optoelectronic devices highlights their potential to transform technologies such as light emitting diodes (LEDs), lasers, ...
Report analyzes long history of NASA support for commercial space
NASA published a new report on Thursday highlighting 17 agency mechanisms that have directly and indirectly supported the development and growth of the U.S. commercial space sector for the benefit of humanity.
Systemic solutions needed to counter spread of science misinformation, says new report
Misinformation about science harms personal decisions, democracy and public policy, says Northeastern University professor David Lazer, who contributed to a National Academies of Sciences, Engineering and Medicine report ...
Professor challenges tokenizing women of color in academia
The unspoken rule for women of color in academia is to be everything to everyone—mentor, diversity champion, tireless scholar, and silent workhorse, says York University equity studies Assistant Professor Yvonne Su in her ...
Digital labels can help grocers waste less food
In 2022, U.S. grocers wasted 5 million tons of food, with 35% of it going to landfills, according to the food waste nonprofit ReFed. More than half of that waste—2.7 million tons—was past the labels' expiration dates.
Biosensors mimic human olfactory system to discriminate between very similar odors
The human olfactory system discriminates between thousands of odors by interacting specifically with olfactory receptors on sensory neurons. Each receptor can detect several odorants at different intensities, and the same ...
Mitigating animal-vehicle collisions with field sensors, AI and ecological modeling
Collisions between animals and vehicles are a threat to conservation efforts and human safety, and have a massive cost for transport infrastructure managers and users.
Volunteers should not become friends with patients, say Norwegian researchers
When a volunteer supports a patient, a special and often rather unequal relationship can develop between the helper and the person receiving the help. Researchers have now investigated this relationship and offer guidance ...
Quantum walk computing unlocks new potential in quantum science and technology
Quantum walks are a powerful theoretical model using quantum effects such as superposition, interference and entanglement to achieve computing power beyond classical methods.
The microbiology of honey: A sweet symphony of life
Honey, a complex substance made by a variety of species of bees, is often celebrated for its sweetness and health benefits. In fact, humans have been using honey, sometimes called liquid gold, for generations to soothe cold ...
Shedding light on snow's crucial role in Earth's climate system
EU researchers are braving extreme Arctic conditions to shed light on snow's crucial role in Earth's climate system.
